Just like I thought....just punch the cat out for the meanwhile......

you don't necessarily need to have a straight pipe made or put in a new cat yet..

 

engine was 2385 plus tax and I do all the work myself.

 

Was this the stock cat or an aftermarket hiflow one?

 

what do you mean

 

it was the stock one

 

Take the catpipe off and beat the combs out of it. Or you could just take it to a muffler shop and have a custom straight pipe made for around $70ish. This will provide more hp too, but I'm not sure how your emanage tune will do with lack of backpressure. What psi do you have it tuned to right now?

Jamie

 

its at the stock setting 6psi i think

 

I'm going to try to put my straight pipe back on with the turbo and see if that helps the problems I'm having. I'm getting it dyno tuned this upcoming week hopefully, but I'll let you know if it runs alright with the straight pipe with the factory boost settings.

 

Straight midpipe will have its own tuning problems. The Greddy map is designed for 5.5psi. Even a RP cat pipe will reduce the backpressure to the point where you'll see boost in the 8psi range. At that point it will start to detonate around 5-6k RPM at WOT.
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Alaska dispensary

 

What can you do to stop it from detinating at 8 psi?

 

Can I buy one for that?

 

i bet mazmart could get you one for that much richard

 

If I can get an engine for that I'll take it. How do I Check that out?

Don't tell me, They have a website, right. I'm not used to these things yet.
Someone just said they have a vendor thread, I answered my own question. :o

I'm on my way.

 

WHAT?
I have the RP midpipe and no detonation problems, nor is the car automatically boosting up to 8psi. Where are you getting this from?

 

I'm getting this from running the car. Two separate boost gauges read 7.8 psi max and detonation on 91 octane in 60 degree ambient air.
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vapir oxygen vaporizer

 

ok update... found out that the cat was clogged quick fix we hollowed out the cat. wow much better no more non boosting. dynoed the car and retuned it 225.00 rwh with. turbotrix said once the bb pipe gopes on i should be about 235-240 with a nother retune.

 

so are you saying your car detonated, and the only mod you had was the rp cat?

 

i think the point he is making is if you cant get the exhaust out you cant spin up a turbo.

beers

 

Yeah I just took my cat off and put my straight pipe back on and it's nowhere near as loud as it was before the turbo and it runs soooo much better. For some reason the boost never drops either. Another plus is since I'm still running dog rich it shoots flames everytime I shift gears or gear down. It's almost on demand. I love it :D

 

get the exhaust out? i am going to assume you mean "if you have too much restriction". When i had my turbo on with oem exhaust/cat it spooled fine. Now that i have aftermarket cat/exhaust it still spools fine.

 

Pretty much. I have other mods but none that I believe could contribute to this problem. Again, up to 7.8 psi boost with 91 octane gas causes detonation between 5-6k rpm. I don't know why I'm spooling that high and you're not.
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Bestsquirtdoll