Boost issues!

[D3S]

Hi,

Well had my FD legally on the road now for a few days and i am loving it, but i still seem to have boost problems. I have search through the site hoping someone would have similar issues but there isnt really anything exactly the same as mine.

So on my 1st turbo its spools up but only hits 0.5-0.6 bar, then the 2nd comes in hits 0.6 bar but then fluctuates and hits one bar drops down to 0.8 bar and then about 0.7 bar, put your foot down again it will hit 0.8 bar fluctuate and hit a bar then drops.

I have check all the IC, Y pipe and turbo inlet pipes and they are not split, checked some of the vacume hoses and all of them seem to be in good condition. So i wonder if its either a pipe collapsing to cause this or a solonoid thrown a wobbly. The car is a 93 Type R with just Apexi filters and Blitz nur exhaust, it still has the cat on it but the car does pop like mad on over run.

Any advice would be good before i start going into the rats nest, i think i will change all the main pipes to hard pipes hoping that will help.

Cheers

Gav

[Fish]

What mods does the car have? If you have an aftermarket air filter and complete aftermarket exhaust system you could be getting boost spikes/fuel cut. Which this sounds like.

Do you have any form of boost control/ecu fitted?

Fish

[D3S]

Hi,

Standard ECU, has a cat back Blitz Nur and Apexi Filters, that what i first though it would be boost spike but if its got the cat then how could that be? hmm but if it has a CAT would it be popping?

Cheers

Gav