de-cat with sti back box
17 January 2003, 09:25 PM
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I have just finished making a de-cat down dipe with 3.5" pipe and an open neck will it be ok to run it with a straight through centre and an sti rear box rather than splashing out on a new back box
18 January 2003, 03:14 PM
#2
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When you say OK, what do you mean?
I'd be more concerned with fitting the downpipe than wondering if it makes a difference with the backbox and centre.
When you improve the air-flow of the exhaust, you reduce the backpressure. I was warned by my Dealer that doing so may cause #3 cyclinder to overheat
Same Dealer was more than happy to de-cat other cars, so go figure.
I run a TSL DP, TSL centre and an STI backbox. The backbox is more restrictive, so helps to minimise this reduction in backpressure. So I guess, yes it will be OK with the backbox and any risks in the reduction in backpressure will be minimised with that type of backbox.
Stefan
I'd be more concerned with fitting the downpipe than wondering if it makes a difference with the backbox and centre.
When you improve the air-flow of the exhaust, you reduce the backpressure. I was warned by my Dealer that doing so may cause #3 cyclinder to overheat
Same Dealer was more than happy to de-cat other cars, so go figure.I run a TSL DP, TSL centre and an STI backbox. The backbox is more restrictive, so helps to minimise this reduction in backpressure. So I guess, yes it will be OK with the backbox and any risks in the reduction in backpressure will be minimised with that type of backbox.
Stefan
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