i got a 04 srt 4 wit mxp full exhaust,aem intake,boost control,stage 1,bigger fmic,agp waste gate, n hard pipes. i was worried how must psi i can run witout hurting nothin??

 

you really need to get a wideband, but till you get one I would stay at 17 psi or below

 

yea i would say 17 is the magic number too

 

so if i get a wideband wat a safe number? thanks

 

not much more than 17 maby 19 u need to build the engine with forged internals to go much higher.

 

Factory fuel system? You can't hold any more than 16psi to redline without running too lean.

 

what about stage 2 injectors and walbro fuel pumpa????

 

Then you need something to control the fuel injectors with. Stage 2 injectors + 255 LPM + Stock PCM = Pig rich car running like ****e.

 

A safe number on the Wideband would be 16 with wide open throttle. Make sure you boost your car to 25 lbs though.
The car will run great!!!

Just kidding. A safe number on the wideband would be 11.8-12.0

 

17-18psi.

The spike is great and all for torque and neck snapping, but the continuous power is better..aka, a stiffer wga which will hold boost longer in the higher rpms. Of course, you need alot more fuel to hold that up top. On stock turbo, I was never able to reach more than 14-15psi at redline though. But it would be a gradual decrease and not a quick drop off.