Miata bigger injectors. bigger injectors on an emanage blue ECUs, ECU Tuning and Programming MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> Larger injectors now or wait and see? MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Bigger injectors starts immediately dies bigger injectors on an emanage blue ECUs, ECU Tuning and Programming Feb 4, 2013 · The (injector) "dead-time" is in the injector characteristics setting and is usually approximately 1ms, but is unique to each injector design. Mar 8, 2010 · Limits of bigger injectors NA/NB Power Mods Forum usage Contact Us MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> Hacked MAF and bigger injectors Reply Thread Tools Display Modes 3rd April 2007, 18:18 # 2 Chuck75 Fifth gear Join Date: Aug 2000 Location: Middle Georgia Posts: 3,528 Chuck75 Fifth gear Join Date: Aug 2000 Location: Middle Georgia Posts: 3,528 Mar 8, 2010 · MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> larger injectors on a '03? Larger injectors on a 94 w/ Powercard TurbochargingTurbochargingForced Air induction using turbocharger technology. on afm with bigger injectors. 8. I think I remember reading that large high impedence injectors can't idle that well. Bob twilightblue 3rd January 2009, 23:40 MegaSquirtPNP Plug-N-Play Standalone Engine Management Systems by DIYAutoTune. I believe that can be fixed with a resistor that modifies the MAF output. and 550cc They still won't work with the stock ECU. 5mm pulley, and the exhaust is done from block to tip. Upgrading fuel pumps, injectors, and lines ensures reliable power delivery. Using these numbers as a guideline, you can select the approximate injector size in the following formula for your Miata to reach and estimated 200HP (engine) Apr 15, 2024 · In preparation for turbocharging, and to take advantage of the programmable DIYPNP MegaSquirt 2 (MS2), I decided to upgrade the Miata’s fuel injectors. Anything from a free flow air filter to a turbo or supercharger is open discussion here. Have you driven a Miata with 300rwhp? What about one with 200-220rwhp? With intercooler, downpipe, intake, and a boost controller you can get around 190rwhp. The best spray pattern (center-axis conical) and response time available, and flow-tested and matched to ±0. 6L linked 15psi MAX greddy? Are the rx-7 550s too big or unnecessary? There's a nice looking set of 460s available on ebay. No Turbo vs. Miata Turbo seems to say otherwise to a degree granted, but I doubt you would get very reliable results if you change injector size by more than 5%. The time now is 02:52. MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> I need help going to larger injectors Larger Injectors NB (1999-2005) General discussionNB (1999-2005) General discussion*** Sponsored by RoadSpy ***Discussions about the second generation MX-5 Miata About Miata Forum Forum Rules Supporting Membership Disclaimer Problems Registration/Login Trouble MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> I need help going to larger injectors Do I need larger injectors? Supercharging it also depends on the injector impedance. my stock injectors are about 305cc and i am wondering how much larger inj. A full system overhaul from tank to injectors prevents lean conditions and maximizes performance. A good starting point is to divide old injector volume by new, and multiply that by each value in your MS tables in TStudio. i. MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Naturally aspirated> Bigger injectors to compensate for lean a/f? NA/NB Power Mods*** Sponsored by Flyin Miata ***This is the area you can discuss ways to make your Miata go faster. Someone correct me if I'm wrong. MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods> larger injectors with a NA? Mar 8, 2010 · Larger injectors on a 94 w/ Powercard Turbocharging this is for a gtx actually. Super debates in this section! About MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Naturally aspirated> Do I need larger injectors? Naturally aspiratedPower discussions that are specific to naturally aspirated intake systems. There's nothing you can really fool with to trick the ECU to properly run anything larger. In the meantime, I had nothing better to do than modify the mighty mite. Ensure precise and efficient fuel delivery with our high-performance injectors. RX8 Yellow Injectors are a very common upgrade for any forced induction MX5. -Edward Edward Trahan 7th September 2003, 21:56 Bigger injectors to compensate for lean a/f? Naturally aspirated MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Naturally aspirated> Bigger injectors to compensate for lean a/f? MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Naturally aspirated> Bigger injectors to compensate for lean a/f? Naturally aspiratedPower discussions that are specific to naturally aspirated intake systems. stock ECU. Setup: § 97’ M-ed, four pt. Roll bar, Tokico shocks, gauges § JR Stupid Charger § Boost upgrade o Larger Crank pulley o Larger Fuel Pump (100psi) o JR AFPR (Running 75 psi @ idle) o J&S Knock retard (This was still an option when I bought the upgr. 8 Miata injectors complement each other quite well. Mar 8, 2010 · If your injectors work off boost, and Idle OK, you don't need to change them. ) w/LED air/fuel The latest Bosch EV-14 design, these are state of the art injectors and an FM exclusive. I'm fairly certain this will MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> I need help going to larger injectors 300-350, is that a made up number? Because 300-350 requires a LOT of money and introduces questionable reliability. . Special MAF for larger Injectors - Mustang idea, maybe Miata application NA/NB Power Mods Basically a hacked MAF is a MAF whose guts have been taken out and placed into a larger diameter housing, which in turn causes the ECU to "see" less air proportionally than is actually moving through it, resulting in a shorter injector pulse, allowing you to run larger injectors. You MUST re-tune for larger injectors. While the ECU may be able to drive them, it wouldn't be able to limit fuel flow to a reasonable amount. The O2 sensor shortens the pulse to get the correct air fuel ratio. All times are GMT -5. 6. Can I slap on the stock ECU and run these injectors? Will the ECU control the proper amount of fuel needed? Mar 8, 2010 · Bigger injectors . 10 Copyright ©2000 - 2025, vBulletin Solutions, Inc. Large Low impedance injectors tend to idle better than Large high impedance. e: a turbo or supercharger In fact, going to a larger size injector will negatively impact idle quality, even with a tuneable standalone ECU. Bill socal pat 28th . Then if you get bigger than about 315cc injectors you Mar 8, 2010 · Page 2- I need help going to larger injectors Turbocharging You need to reduce the fuel squirt interval, the injector open time, any time you increase the size of the injectors. boost The '89-92 non-turbo cars came with 440cc (blue top) or 460cc (red top) injectors from the factory, and they are a direct plug-n-play into the Miata. I'll also show you how to adjust your tune to account MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> I need help going to larger injectors MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> I need help going to larger injectors Maybe you'd like to get a bigger AFM at the same time the slightly larger RX7 sensor and the slightly larger 1. The only possibility is if the car is tested open loop (highly unlikely), bigger injectors will run richer. Jan 21, 2022 · About to install some flow tested and balanced RX-8 injectors to upgrade my stock 265cc/min injectors which are totally overwhelmed in this application. MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Supercharging> recommendations for source for larger injectors? disadvantages of larger injectors TurbochargingTurbochargingForced Air induction using turbocharger technology. Mar 8, 2010 · 260cc injectors on 1. So unfortunately yes it would be bad to just put in larger injectors, you will have to upgrade to an aftermarket ECU or osme sort of fuel controller if you want to change that. I'm planning on putting bigger injectors in and my tuner advised going this route. An adapter is required (and included) to match the Would it be possible to use larger injectors with the stock ECU to compensate for a mildly modded engine that is running a bit too lean at full throttle? Would drivability be affected? NA/NB Power Mods*** Sponsored by Flyin Miata ***This is the area you can discuss ways to make your Miata go faster. How much power can the stock injectors handle? How do you know what size injectors you need? Do you need a fuel pump? Jeremy goes into detail about how and why you might need to upgrade your injectors and fuel system. The lower impedance injectors have a shorter trigger time which will allow a bigger injector to idle easier. MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> I need help going to larger injectors MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> I need help going to larger injectors MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> I need help going to larger injectors Flowforce and Injector Dynamics are both great options. Thye're pretty easy to come by, as they're about as worthless to the RX-7 guys as stock Miata injectors are to us. Kit Includes: MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Naturally aspirated> Do I need larger injectors? Mar 8, 2025 · Upgrading Your Miata's Fuel System for Performance Builds Boosted Miatas demand more fuel, and the stock system may struggle at high RPMs or in long corners. The stock injectors on the '99-'00 are large enough to flow enough fuel with just the Powercard controlling them for the 100mm pulley, which is what came on the base non-intercooled BRP Hotsides. The oem computer is capable of the larger injectors, but isn't tuned to use them. However, if you want to run a larger pulley for more boost, which the air/air IC will easily allow you to do, larger injectors or an extra injector will be needed to not run lean. About Miata Forum Forum Rules Supporting Membership Disclaimer Problems Registration/Login Trouble MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> I need help going to larger injectors Mar 8, 2010 · I need help going to larger injectors Turbocharging Are their any larger injectors than stock that a PowerCard Pro is compatable with. 55 for the Miata seems to result in more accurate calculations. You really should be looking at bigger injectors for over 10psi. Thanks to our tight flow matching at 2ms pulse width, they will support 300whp on pump gas, and still idle beautifully. Powered by vBulletin® Version 3. The ID1050X will flow enough fuel for over 400WHP in your NA or NB Miata all while having the capability to idle stoich at 14. I plan on goin turbo later but as for now, will they help my performance? Fletcher 14th May 2005, 20:31 Originally posted by zoomzoomzoom97mx5: MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Naturally aspirated> Do I need larger injectors? NA/NB Power Mods*** Sponsored by Flyin Miata ***This is the area you can discuss ways to make your Miata go faster. com Whether you have high compression N/A motor or forced induction application, Injector Dynamics 1050cc fuel injectors will be the last set you'll need. Designed for Mazda MX-5 Miata engines, these injectors optimize combustion and enhance power output. NA/NB Power Mods Common forum questions Forum usage Contact Us MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Supercharging>[NB] AFPR vs Larger injectors (for emissions legality) Reply Page 1 of 2 1 2 > Thread Tools Display Modes 10th March 2015, 13:28 # 8 ArthurDubya Second gear Join Date: Dec 2013 Location: Savannah, GA Posts: 264 Mar 8, 2010 · [NA] 1994 Miata problem with larger injectors Naturally aspirated Mar 8, 2010 · NA Engine Build -Injector Question Naturally aspiratedNaturally aspiratedPower discussions that are specific to naturally aspirated intake systems. Mar 8, 2010 · Does the 6psi fuel increase to every 1psi of boost apply with larger injectors? NA/NB Power Mods MSPNP settings for larger injectors ECUs, ECU Tuning and Programming The 99's are purple tops, 230 cc is correct, but that's at the standard industry rated fuel pressure of 45 psi, in actuality the 99-newer Miata's use 60 psi of fuel pressure, so those 99, 230 cc injectors flow approx, 260 cc. Copyright ©1994 - 2025, Eunos Aug 3, 2001 · larger injector ? NA/NB Power ModsNA/NB Power Mods*** Sponsored by Flyin Miata ***This is the area you can discuss ways to make your Miata go faster. Which leads me to my question, I had to upgrade the injectors to power the motor under boost, now I have much bigger injectors, I haven't looked at them in over a year but I think they were 460cc off a rx7 spliced in to work. Does anyone have any info on wiring in the 3/4 injectors to the 1. Most injectors will max out at 80-85% duty cycle and this is the accepted industry standard. They can deliver approximately 70% more fuel than the standard purple injectors, and are a direct plug and play swap Bigger injectors- remove pump? Turbocharging Dec 8, 2014 · Using . [NA] 1994 Miata problem with larger injectors Naturally aspirated MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods> q. NOW or LATER?? NA/NB Power Mods Mar 8, 2010 · Nostrum 400HP E85 Direct Injection kit? ND Power mods NA/NB Power Mods*** Sponsored by Flyin Miata ***This is the area you can discuss ways to make your Miata go faster. 6 Miata PNP MS3 PRO? Any help is appreciated, thank you. Mar 8, 2010 · Running JRSC boost upgrade – do I need bigger injectors? NA/NB Power Mods MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Naturally aspirated> Bigger injectors to compensate for lean a/f? The cheap alternative would be 89-91 RX-7 turbo injectors. Ideal for both stock and modified ITB, Turbo or Supercharger engines, they provide the reliability and performance you need for any driving condition. MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Naturally aspirated> Do I need larger injectors? MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> I need help going to larger injectors In today's episode, we'll install new FlowForce 640cc injectors in the Miata. NA/NB Power Mods*** Sponsored by Flyin Miata ***This is the area you can discuss ways to make your Miata go faster. MX-5 Miata Forum > NA/NB (1990-2005) Miata > NA/NB Power Mods > Turbocharging> larger injectors on a '03? MS3 Basic larger injector settings ECUs, ECU Tuning and Programming Jul 2, 2023 · I have a 91 Miata with a 1. There are a few options for Miata fuel injectors; on the most budget end, there are larger OEM Mazda injectors from other models that can be swapped in, namely RX-8 yellow injectors. If you're running bigger injectors for example, install the MSPNP first and get that tested and running, then install the bigger injectors, scale the REQ_FUEL, AE, and Cranking PW on your MSPNP for the bigger injectors, and again make sure it's properly sorted. With a stock ECU, it's impossible to have larger injectors and see better idle Any +94 miata should have the wiggle room built in to idle +10/15% larger injectors. They are hard to find, but htey are high imp. 7:1 AFR. These are true plug-in installation for all 1990-05 Miatas, with no need for adapters or wiring harness modifications. Larger injectors do nothing in terms of performance if you can't match the increased fuel volume with increased airflow. After much searching and reading I still have questions on best initial setting for these new injectors (going in next week). I don't know the specs on those particular Deatschwerks injectors, but the Rotrex kit on my '97 came with some 330cc DW injectors and they were a very poor choice. 8 turbo swap. Super debates in this section! About Im thinkin of buyin a bigger set of injectors (310) for my 1. What's the biggest injector that I ought to consider for my 1. 8 N/A. They are EV14 injectors and can be purchased as a kit with necessary odds-and-ends to install on a Miata. The fuel required is the same, but it comes out of the bigger injectors faster. This kit comes with everything you need to run EV14 injectors. If it wasn't correct for your old injectors, then that may explain why you had to fake req_fuel before. 4% (tighter than most). It's tuned and runs fine, but i want to add sequential injection to it In place of the batch fire. These would be maxed out around 12 huh? I’m back on the list after a really long hiatus. I'm just looking to keep things simple for right now and I'm planning on running a ported head with custom supercharger cams an ported intake manifold, a rebuild recoated M45 thats been ported with a ported TB, a FMIC and a 62. can i use if i plan on compensating with only the spring tension of the afm? *note* this is with the stock fuel pressure from vacuum to max. Aug 15, 2023 · This week on FM Live, Jeremy Ferber gives us all the details on Fuel Injector upgrades for your Miata. These EV14 injectors are the go-to choice for high performance naturally aspirated builds, low pressure e85 forced induction, or light built motor pump gas force induction. qkg4la bptp 2fe gzii n4ppy 3j ursz7f hony rv4v sb