Boost Spike

[Nismo-S14]

hello everyone! well i have a 95 240 with an S14 sr, right now im running a PE1820 turbo, with PE wastgate. i have the wastegate line running to my hot pipe i had the boost pressure set at 10psi now when i hit second gear to fifth from 5000 rpm to red line im hitting 18psi i checked intercooler pipes any line i can think of nothing so anything helps thanks ! sorry for the improper grammer i typing this in a hurry!!!!

[PyR0NiAk]

What size spring is on the wastegate?

[Sugar]

If you have a screw on wastegate flange make sure it's sealed for sure. Having a decent leak there will play with the pressures quiet a bit. My friends car spiked up to about 20psi because of it.

[Nismo-S14]

it is a screw on wastegate flange i checked it. There are no leaks but when i try to tighten it a little more, the pressure went down it surges to about 1 bar. so i think I'm getting somewhere?

[PyR0NiAk]

It would seem so..

[Sugar]

Get it where you want it and have someone weld it up. Screw on flanges are a joke.