Powervalve (BCS) 90mm Downpipe

[BCS Nige]

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

Cheers
Nige

 

[Smirky]

@S3Alex got you written all over it lol

 

[S3Alex]

@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]

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

 

[downtothebone]

Isn't that the cat?

 

[Smirky]

Isn't that the cat?

I though the cat was the bit with like extra metal around it near the bottom?

 

[smurfworth]

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

 

[aterro]

What's the standard exhaust diameter out of interest? MM WISE?

 

[S3Alex]

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]

It does look a bit tight in there

 

[S3Alex]

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...

 

[BCS Nige]

It's all very tight but with careful application 90mm is possible

 

[BCS Nige]

What's the standard exhaust diameter out of interest? MM WISE?

Standard bore is 60mm with two cats - one right behind the turbo...

 

[S3Alex]

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?

 

[BCS Nige]

I think the separate dump tube would be feasable but without checking it's hard to say...

 

[S3Alex]

I think the separate dump tube would be feasable but without checking it's hard to say...

Hmmmm

I can see you'd need the beast for a consultation.