ok, ID1K injectors installed and driveability is great. Im still having an issue at WOT with the car falling on its face.

with the 80s the car did this when it went over 110% IDC. Now this is happening at 75%IDC with the 1000s.

Car has built motor/ported head/cams, 2.7"TVS with ATI overdrive, E85, RSFS, ID1K, DW300

see screenshots from log.

it doesnt look like spark blowout, as there are no misfires, and no knock

wonder if my fuel pump cannot keep up, happens around 22psi boost. Wideband wasnt loggin today so never mind AFR

 

For some reason your LTFT's are dropping waaaaaay down at WOT. Is the car not going into PE fully? STFT's appear to zero out.

 

Infra, posted my tune and full log on HPT

Have a look if you dont mind.

 

disable the boost bypass on the side of the tvs.

 

I just noticed my curser moved from the peak i was trying to illustrate at time of screen capture.

John- what are you suggesting? That the bypass valve opens when under full boost wot?

This feels like fuel cut, like when kids used to bounce the stock lsj off the limiter

 

The second screenshot definitely shows a decrease in boost and cylinder pressure.

 

Def a fueling issue.

 

Agreed but it stops reving, the drop in boost is the gear shift after it happens i think

 

Built TVS Car - WOT car falls on its face at upper RPMS - HP Tuners Bulletin Board

 

Hey!!!! When you limit boost in 2nd it limits in 3, 4, and 5 as well. Raise that to 100% and enjoy!!

 

I agree chris, but it has to be tune related i think

I have literally every fuel mod possible and quality kit, not sure what the heck would cause it

 

Damn if it is as simple as that im gonna flip

Question is it does it a a range of rpms from 6-7k and not 100% of the time, just then the load is really on it

 

It actually looks like it starts dropping off earlier, but thats where I would start your search. You have boost limited at 6500 rpms, but I'd still start with just maxing that out again.

 

Ok ill try that? Anything else you see

Thanks for your help guys!

 

Also, I can't tell if its you playing with the gas pedal or if your throttle is closing. If you had a good full 3rd gear pull it would be a little clearer to see. Im lookin at the log from HPT forums.

 

I was pedaling it to make it do it, ya ETCs in the last scrn shot are whacky

 

may be a pump problem

 

area47. facebook.

 

huh?

what arm said, and what john said. both of them. use your foot as boost control. the tvs bypass valves suck.

 

so you think disabling the bypass valve would stop a fuel cut? im not following

 

solution - we trade cars.

 

your injectors are not shutting off.

try those two things and report back.

whats your plugs gapped at?

 

"0.029 - 0.030" gap

ill remove the boost limit and test, then test without the bypass on and let you know

 

drop the plug gap to .025.

 

maxxed out the 1000s