Detonation

[guricha]

Hi all

I need help so if anyone can give few words advice I will be glad...

So i have R33 RB25DET, just have modified and installed FMIC catback 3" and intake, so i just bought turbo for my car and have instaled on it, it has internal westgate 11 PSi, but have problem when am runing on slowly it has no problem but when going agrecive acceleration in peak it has detonation, please advise somthing or what processes i should provide when goint to install aftermarket turbo, and yed i have stock fuel pump and injectors, just nothing change on this car just FMIC, catback and intake....

and yes sparks seems like never changed on this car i checked and looks like thay are ok... do i need change them anyway?

please help because my car is much slower than before now:(, and here we dont have any dynos:(

P>S and yes i think turbo is ok and dont have any problem because its shows 10-11PSI on peak but begining detonation..

HELP HELP HELP

thanks in advanced

Edited July 24, 2007 by guricha

[fEkuaR]

I assume your running an aftermarket turbo on the standard ecu. That is your problem.

[guricha]

I assume your running an aftermarket turbo on the standard ecu. That is your problem.

do you thinks so? what should i do? and i know some guys and thay have stock ECU but runing on 13 PSI but its ok..

[RBwhatever]

What size is this turbo?

[R31Nismoid]

do you thinks so? what should i do? and i know some guys and thay have stock ECU but runing on 13 PSI but its ok..

Yes, but thats the stock turbo.

Just because one car "seems" fine, doesnt mean the next one will be

If you have detonation its generally

*The tune is crap (in your case, its not even better than factory which is a major issue)

*Injectors not upto the task

*Fuel pump, could be on its way out

Although, having changed the turbo. I dont know why you wouldnt have installed a dump pipe aswell, thats another key mod

[guricha]

now turbo is working ok:) what i do change wesgate on old one make some mods on ignition and boost it up till 12 PSI:) its runing mach faster now:) thanks anyway people for help