Thread: Stock sr20de+t-25+-85=win

There are thre graphs. First one is pump gas tune93. Second graph is e85 with pump gas tune and broadly adjusted afr a bit. Last graph is a dialed in e85 tune.

I did not touch the timing tables as I made them a bit conservative, reason being the I know the customer and he does not know when to let off.I am pretty sure a few more could have been extracted with timing and messing with the gain on the boost controller but my brother and I agreed to have a large margin of safety.
So yes I just adjusted the tables on the fuel map for the e-85.
the blue and red lines are pump gas 10 psi vs 10 psi on e-85.

I am not sure what your saying.

Once he put the E85 in and dialed out the AFR's it then became a E85 tune at that very moment.

i forgot u all are known for dyno tuning, i thought the e85 was dropped and and just touched up the afr's with a piggyback like safc or something of that nature....

Yeah the torque is normal but the hp is way high and thats gotta be an e85 and external gate factor.

The torque is what would cause the detonation. It would alway detonate at peak torque. If i were to start the pull above peak torque and spike the boost up to 19 lbs on the t25 it would be just fine. If i start below and got that instant response it was all over and each time is where it killed the motors. Again I had many telling me it was a tune issue and blah blah blah. But it wasnt. Fact is I was pushing it. When your spiking more than it will hold throughout the rest of the powerband your overpushing the turbo.

Again the e-85 and external gate are allowing this being able to bleed off the excessive backpressure from that much boost and with the extremely high intake temps that I know your getting the e-85 is helping cool them and the cylinders from the backpressure.

Again im gonna suggest not to use the cams. Thats already a phat powerband and I think in this case your going to run into problems with heat on the pistons from backpressure and the larger overlap. But hey a de is a dime a dozen so why not, it would be interesting.

I am willing to bet you WILL NOT be able to hold boost as long or as well with the cams. But it may help hold power

Bir even though its not holding boost aswell doesn't mean its not moving more air.

yeah, exactly, people with stock cams can get a t25 to hold 17 lbs while when i had s4's the most it would hold was 14 ft-lbs

Nice job Gio! Good stuff man.

It shouldn't have an issue with cams to hold the 15psi it's doing now, the mild spike It has is 2psi and as soon as it reaches 17 it falls back to 15psi. That's the way I have the gain set on the boost controller.
Aston that's the main reason I told the owner to tune on e-85. But he can always switch back to 93 octane and switch maps. Best of bOth worlds.

I assume tune was done with something more advanced then a piggyback setup correct?