Can you look over my tune? 2.9L M20 Turbo

[LowR3V'in]

So does your car feel pretty slow or what?

[ForcedFirebird]

But still I wanted to call BS on him but what can I do?


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Get a professional tune, then get him in the car and load his tune after a short drive with a real one :p

[SGT StudMuffiin]

Oh and also he had to do a fair bit of rewiring and tidying up the existing wiring.


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[SGT StudMuffiin]

Not full 3 days of course, and also my coil pack died and then the spark plug wires died too. But still I wanted to call BS on him but what can I do?


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[ForcedFirebird]

3 days?!?! Takes me about 1.5hr to nail a street tune and about 6-8 pulls on a dyno for max effort. But, to be fair, I have tuned a lot of m20's....

[SGT StudMuffiin]

The car was tuned over a period of 3 days, and he said he made the map completely from scratch.


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[pazi88]

He pulled a ton of timing, even at 100kpa. 100kpa at 1000rpm is most certainly reached when dumping the throttle just off idle, no need for it to be pulled back to 8 degrees there.

Probaply. I'm not that kind of expert with m20 that I could tell by degree if ignition map is ok :D But that map looked so familiar that I have sure seen that before besides the retarded top section. Which is dead giveaway because of the negative values.

[ForcedFirebird]

Those negative values are on the area that engine never reaches. So it doesn't matter. But for me it mostly looks like that the tuner took some readymade m20 turbo map from internet and retarted boosted section of the map by 3-8 degrees to make it "safe" and called it a day.

He pulled a ton of timing, even at 100kpa. 100kpa at 1000rpm is most certainly reached when dumping the throttle just off idle, no need for it to be pulled back to 8 degrees there.

[pazi88]

First major red flag for me is negative timing values....this does not pass the sense check.

And you said it was a 2.9L but you have 2693cc in the settings?

Those negative values are on the area that engine never reaches. So it doesn't matter. But for me it mostly looks like that the tuner took some readymade m20 turbo map from internet and retarted boosted section of the map by 3-8 degrees to make it "safe" and called it a day.

[LowR3V'in]

Glowing manifold at 10psi and 15hp gains total from n/a :P

[ForcedFirebird]

I tried PMing you but it says your inbox is full


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Yeah, been conversing with a lot of people due to my garage sale at the shop.


Cleared it out. The email in my sig is also valid. ;)

[SGT StudMuffiin]

Timing is user-defined. It will not be based on any of the engine values.

Fuel on the other hand will have slight changes when changing the engine values.

I tried PMing you but it says your inbox is full


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[ForcedFirebird]

Timing is user-defined. It will not be based on any of the engine values.

Fuel on the other hand will have slight changes when changing the engine values.

[SGT StudMuffiin]

First major red flag for me is negative timing values....this does not pass the sense check.

And you said it was a 2.9L but you have 2693cc in the settings?

Yea I wonder if my tuner thought it was a 2.7. Does that make any difference though? If figure when you’re tuning the car it’s going to react to inputs and changes regardless of displacement, unless of course, tunerstudio changes the parameters based on the given displacement.


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[e30davie]

First major red flag for me is negative timing values....this does not pass the sense check.

And you said it was a 2.9L but you have 2693cc in the settings?