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can a 3rd gen ecu be tune? [Archive] - Toyota MR2 Message Board

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can a 3rd gen ecu be tune? [Archive] - Toyota MR2 Message Board Toyota MR2 Message Board > Welcome To The Toyota MR2 Board! > MR2Board Sponsors > ATS Racing > can a 3rd gen ecu be tune? PDA

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slownjamz06-20-2010, 09:28 PMhello ats. can a 3rd gen ecu be tune for 91 octane. i know i will want a PFC tune for 91 octane but not now.

am i better off not tuning the stock ecu and just run 15 boost with 91 oct. jaymz1106-20-2010, 10:19 PManything can be tuned for the right amount of $$$$
Scott told me when i was trying to decide which route to go on a swap that they hopefully will in the future but do not have the means as of now.
im sure as always someone will step to the challenge Mark_Dorman06-21-2010, 12:25 AMThe actual ecu programs cannot be tuned. You have to run a piggyback or standalone. The 3rd gen ecu runs fine on 91 octane. If you want a good tune I would go with someone who's tuned for companies like Jun and Tomei. PM me if you want me to put you in touch with the right people. ATSAaron06-21-2010, 11:47 AMThe actual ecu programs cannot be tuned. You have to run a piggyback or standalone. The 3rd gen ecu runs fine on 91 octane. If you want a good tune I would go with someone who's tuned for companies like Jun and Tomei. PM me if you want me to put you in touch with the right people.

Does Tomei make anything for the MR2?

When would Jun or Tomei have access to 91 octane? Isn't Japan 94 octane and isn't that exactly what this thread is about?

The good news is that the Gen 3 should run OK on 91 octane at 15 psi. Pay attention to the car's behavior and if it seems inconsistent (like fast one pull and slow the next) then you need to back the boost down a little bit until you get more consistent behavior. They run all day at 17psi on 93 octane, so 15 on 91 should be alright.

We don't offer rom-tunes for the Gen 3 ecu's. The cost of hardware alone is $800, so the finished product is really close to the price of a Power FC.

Aaron Mark_Dorman06-21-2010, 08:17 PMDoesn't matter if they make products for them or not. I was saying their tuners know how to tune a standalone completely. I know it's not worth it on an unmodified 3rd gen. CJMR2T06-21-2010, 09:45 PMYeah, As Aaron said, they will run fine on 91 as long as you follow the points he made..

I speak from experience with this.. I had to get gas one day (well night to be exact) and I was in the middle of nowhere and the only station that was open was out of 93 and the next closest thing they had was 91 (how, I dont know since most stations here only have 2 tanks (87 and 93) and mix at the pump to make different grades) so I filled up with that and the car ran pretty much the same (however, I did turn the boost down to 12psi instead of 17 like I normally run) Im sure it would have been fine at 15 as Aaron pointed out but I figured just to play it safe, I'd cut it back further. Powered by vBulletin® Version 4.2.5 Copyright © 2026 vBulletin Solutions Inc. All rights reserved.

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