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Discussion Starter · #1 ·
Anyone would know why my car stalls when hitting boost? It just simply dies.

Fuel pressure is good, AFR is perfect at the moment that it dies. It still "runs" but won't respont to gas. I dump in neutral and rpms just drop to 0. I then need to push full throttle and crank. I am running AEM EMS. The MAP seems perfect. It's a JDM without a resistor pack, using high impedance injectors.

If anyone has an idea or saw it before, please PM me or call me, or post here.

I am getting desperate. Doesn't seem to be a tuning issue, doesn't seem to be a mechanical issue. Many thanks in advance.
 

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how do you mean that your MAP is perfect??? are you a tuner? what qualifies you to make this judgement? have you done any recent modifications or work to the car? did this happen out of the blue one day? mods? there are alot of unanswered questions here.
 

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Discussion Starter · #4 ·
Wow wow there. Easy boy.

Yeah. 74GTS single turbo, dual fuel pumps, 1000cc inj. aem ems. There seems to be no lean condition according to AFR and wideband. The ecu acts like the car was just suddenly turned off.

I am working with MVP's tuner, which is excellent, and my mechanic who installed and rebuilt my motor.
 

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The Great Kruso
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Sounds like some sort of a fail safe being activated within AEM, I'd ask the tuners.
 

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Wow wow there. Easy boy.

Yeah. 74GTS single turbo, dual fuel pumps, 1000cc inj. aem ems. There seems to be no lean condition according to AFR and wideband. The ecu acts like the car was just suddenly turned off.

I am working with MVP's tuner, which is excellent, and my mechanic who installed and rebuilt my motor.

first of all, im not a boy, i may act like a boy, but rest assured, im a grown man....my post was worded the way it was because there were a bunch of questions left in the air and i wanted to be thorough. is that ok, isnt that what you would like when asking for people to help you diagnose a problem with your car?
seems to me that if you are working with MVP, you should be on the right track and they can more accurately diagnose your situation, rather than us on the interwebz
 

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The Great Kruso
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first of all, im not a boy, i may act like a boy, but rest assured, im a grown man....my post was worded the way it was because there were a bunch of questions left in the air and i wanted to be thorough. is that ok, isnt that what you would like when asking for people to help you diagnose a problem with your car?
seems to me that if you are working with MVP, you should be on the right track and they can more accurately diagnose your situation, rather than us on the interwebz
+1.
 

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Not really wise to stir the hornet's nest when asking for advice, especially when these Supra members like Josh etc.. have a lot of wrench time!

Sounds like you got it handled with the MVP turner. Good luck let us know how it turns out!
 
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