Powervalve (BCS) 90mm Downpipe

BCS Nige

Registered User
For everyone chasing big power, images of the 90mm DPand Flex next to our 76mm variant.

Cheers
Nige

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Smirky

Registered User
@S3Alex got you written all over it lol
 

S3Alex

Rarely neutral
Gold Supporter
@S3Alex got you written all over it lol

It has but need to talk about V-banded connections and low end response.

Nige has been very helpful and I'm still thinking about what's best.
 

Smirky

Registered User
Nige what's the expansion chamber is it ? On the 76mm but not there on the 90?
 

downtothebone

Registered User
Isn't that the cat?
 

Smirky

Registered User

smurfworth

Registered User
200 cell cat, if you zoom in you can just about see the writing.

Bet the 90mm is a tight squeeze as the 76mm is tight and hard enough to fit
 

S3Alex

Rarely neutral
Gold Supporter
I'm still thinking about this.....

Nige was very helpful in the other thread re the effects of a large bore system on low/mid range response.

What I'd need would be a V-banded downpipe,with either an integral dump tube,or a separate one,and then I would guess,a 90mm system from there back.

The next question is would that all fit into the space around the turbo,and prop shaft etc.



 

Smirky

Registered User
It does look a bit tight in there
 

S3Alex

Rarely neutral
Gold Supporter
It does look a bit tight in there

That's the thing...it all does get very tight.

The extra size of the turbo,plus the external wastegate leaves very little room.
I think I need Nige's advice...
 

S3Alex

Rarely neutral
Gold Supporter
It's all very tight but with careful application 90mm is possible

I'm sure you guys can but how would you run this lot....

A separate dump tube or integrated.

Then as before would it be a 90mm system back from there?
 
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