Catless dp on MT

[alvarezbar1]

Has any MT's tried out the MHD Flex Fuel Tune. I'm wondering if the issues get fixed if the tune knows the exact ethanol level.

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[ColonelAdama]

Has any MT's tried out the MHD Flex Fuel Tune. I'm wondering if the issues get fixed if the tune knows the exact ethanol level.

MT flex works fine but no that is unrelated.

It just auto-interpolates between the pump gas, e40, and e85 maps.

 

[alvarezbar1]

MT flex works fine but no that is unrelated.

It just auto-interpolates between the pump gas, e40, and e85 maps.

I'm getting ready to MHD my Catless MT Supra but was starting to hesitate after reading this thread. I'm in SoCal, so we have weak 91 octane. I'm wondering if I'm better off with the stock tune or getting the flex fuel sensor if it avoids the issues stated with the OTS Maps and shifting.

If it auto-interpolates between those OTS maps, then the issues would still pop up, won't they?

 

[ColonelAdama]

I'm getting ready to MHD my Catless MT Supra but was starting to hesitate after reading this thread. I'm in SoCal, so we have weak 91 octane. I'm wondering if I'm better off with the stock tune or getting the flex fuel sensor if it avoids the issues stated with the OTS Maps and shifting.

If it auto-interpolates between those OTS maps, then the issues would still pop up, won't they?

Probably won't have much of an issue with 91 tbh, issue seems to be worse on maps with higher timing.

 

[Dantist]

Causes overboost but a tune could resolve that.

Would a tune get rid of the overboost issue with a very conservative tune? I don't care about making more power, but I had a dangerous event on track today when I got a drivetrain error with a completely dead gas pedal in all gears. Way different than the fuel starvation issue that killed power to 50%. It was on the main straight where cars were passing by my dead Supra at 100+ mph. Turning it off and on gave me back 100% (I think) power.

I'm on AA catted downpipe with AA exhaust, stock intake and tune.

 

[Traxion]

Would a tune get rid of the overboost issue with a very conservative tune? I don't care about making more power, but I had a dangerous event on track today when I got a drivetrain error with a completely dead gas pedal in all gears. Way different than the fuel starvation issue that killed power to 50%. It was on the main straight where cars were passing by my dead Supra at 100+ mph. Turning it off and on gave me back 100% (I think) power.

I'm on AA catted downpipe with AA exhaust, stock intake and tune.

Yes.

 

[DC5UPRA]

Would a tune get rid of the overboost issue with a very conservative tune? I don't care about making more power, but I had a dangerous event on track today when I got a drivetrain error with a completely dead gas pedal in all gears. Way different than the fuel starvation issue that killed power to 50%. It was on the main straight where cars were passing by my dead Supra at 100+ mph. Turning it off and on gave me back 100% (I think) power.

I'm on AA catted downpipe with AA exhaust, stock intake and tune.

Any chance you were logging to see exactly what happened?

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