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I think there have been a rash of faulty gas pedal assemblies. I had two DH owners I worked with have this as a problem and the dealer replaced the gas pedal.

Thanks JD, that helps. At this point I might just try 93/Octane booster over E85. See how far that will go. Save some fuel system volume. Im thinking in terms of a tuning customer that buys a whipple or roush or even ESS kit and is asking for recommendations how to make the most power per...

That’s because of the ultra conservative roush tune. The hardware is 1:1 I assure you. And seeing both cals first hand and knowing how much roush left on the table, it’s no wonder they are behind. Fueling alone they got this tune going 9.0 rich on you at wide open throttle. There is a...

Thats interesting. Looks like they have a plug and play 1000hp kit. I will have to look into that. If I keep this car long term I would do it up right, but for me most of these have just been tuning developement vehicles. And for this one specifically, the roush kit has been severely slept...

And correction on the boost. Its 12.1 PSI Im seeing with the 810hp Phase 2 kit pulley. Not 14psi.

So I tried and tired and tried all the tuning magic I could come up with for low side pump pressure droop. Short of disabling all the low fuel pressure air reduction in the PCM, I just havent been able to solve this tuning only. I decided to just get the VMP fuel pump booster box and see what...

It doesnt have unique camshafts either. They VCT is completely identical to the GT. There is no difference in cam profiles. I keep hearing they are "hardened" but not sure why when there is no shift RPM difference between the GT and DH.

Yes completely stock 5400ish miles on the odo for the red one. The blue one also showroom stock and had like 900 miles on it at that pass. They are very fast, but again thats about it. There is no skill to get everything they have when using the factory launch control. And nobody has been...

93 octane. Thats it. LOL Exciting I know.

Now lets sprinkle back in the mustang. Horrible wheel hop. If you get traction and thats a big IF, then you are at the mercy of what of the 3428905235435 shift schedules the car wants to use. Then of course there are 27 different spark tables it can blend together to make whatever total...

Thanks. Problem is though, there is NOTHING left on the table. The LC is so good, its basically one step behind racing in a Tesla. You just stand on it and let off the brake. No drag radial, no burnout, no skill just on and off switch. GM makes these and the last gen LT cars so consistent...

2000da during the day 900da once it cooled off at night.

I can tell you at 1000da and 2500da at my home track it has. Several track days and I got it on video.

Tell you what once I don’t need to have an s650 anymore for tune testing and development then I’m getting an M car next day. ETs are all over the board for mustangs. Too many factors to compare and they are wildly inconsistent without a real DCT based launch control. My c8 will go 11.3 at any...

I think they put the power down way better than any mustang. Ive seen a new M2 get down and its impressive.

Yes drag mode has the most aggressive shifts with the least amount of tq modulation on shifts. Normal mode has the most tq modulation, and sport/track share the same amount of tq modulation but less than normal. So your seat of the pants feel is correct. Drag is the mode to use IF you have...

Im not going to spend another second debating with you jd. Its never ending blathering of your napkin math and its exhausting. These forum debates never go anywhere.

I won’t get into another debate with you but there are plenty of supercharged mustangs running track days and not melting down. I get you’re being cautious and conservative but you’re creating math to try and cement your position when it’s completely baseless. Your napkin math might make sense...

power enrichment is what you’re looking for. More of it and earlier. I can change the PE ramp rate, pedal demand trigger as well as the actual lambda of what’s being asked for. Just like if you were to add boost. For a track tune I’d have PE turned up for you, as well as the wot pedal demand...

Easy to pick up 30. Our hub dyno puts stock cars at 430-440 and we see 470ish with 93 tune.