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Won't Boost Past Stock Boost

_MRR33

By _MRR33,
in Engines & Forced Induction

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_MRR33 Experienced

_MRR33

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Posted

Hey,

I'm just having a few problems I can't seem to get the car to boost past stock boost. 0.4 - 0.5 bar. Any ideas why? I've recently added a Exhaust and a Intercooler and had a SAFC2 fitted, but yet to be tuned.

Current mods are: K & N Pod Filter, Custom Pod Enclosure, Cold Air Intake, Forged Pistons, Strengthen Conrods, Blueprinted, Balanced, Port Polished, Metal Head gasket, Spitfire Coils, High Performance Timing Belt, High Performance Spark Plugs, Gready Turbo Timer, Front Mount Intercooler, Apexi 3” Cat-Back Exhaust, SAFC2, Bleed Valve, 0.8 (12PSI) Bar Boost if I can find out whats going on

Thanks in advance.

Regards,

Aron

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_MRR33 Experienced

_MRR33

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sounds like there could be a small leak somewhere.. check all hoses & clamps etc.

Just done that, went over the whole car every hose I could see I checked and tightened - still no luck?

Pauly33GTS-t Veteran

Pauly33GTS-t

Posted
Posted (edited)

what type of bleed valve is it... turbo smart ones are setup like this .... Wastegate <----- Boost T <------ Pressure Source.

I have it on my car and it works great, 90 dollars for a boost T but I think its the best one since it has not been troublesome in the least and its been boosting a bit quicker than the stock solenoid could let the car previously

<----- arrow denotes airflow direction.

Edited by Pauly33GTS-t
_MRR33 Experienced

_MRR33

Posted
  • Author
Posted (edited)
could be a leaking exhaust manifold

I put the exhaust on myself recently, cat back only maybe the bolts are a touch lose? Could that cause it?

what type of bleed valve is it... turbo smart ones are setup like this .... Wastegate <----- Boost T <------ Pressure Source.

I have it on my car and it works great, 90 dollars for a boost T but I think its the best one since it has not been troublesome in the least and its been boosting a bit quicker than the stock solenoid could let the car previously

<----- arrow denotes airflow direction.

It's a TurboTech one

Edited by ThugishPimp
Craved Grand Master

Craved

Posted
Posted

boost is a measure of resistance to the air pressure in the plenum .. with a port polished head it may be that you are indeed pushing more through your turbo than previously without the resistence in the head/plenum increasing

_MRR33 Experienced

_MRR33

Posted
  • Author
Posted
boost is a measure of resistance to the air pressure in the plenum .. with a port polished head it may be that you are indeed pushing more through your turbo than previously without the resistence in the head/plenum increasing

I was running 0.8BAR (12PSI) a few weeks ago, but removed the bleed valve until I got the exhaust and intercooler done.

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