Exhaust Mods?

[helrazor]

Has anyone here done exhaust mods to their newer style 70 series T5's? If so, I would like to hear about them. Downpipe, cat back, whatever.

[Pedro Fandango]

i no its not a ?70, but i've got a de-cat with a small Powerflow backbox

Video of Big Tossers Exhaust

[monsterdark]

i've a v70 with aftermarket twin pipes out of theback so they will fit they are powerflow units nice & load

[monsterdark]

4got to add from cat back only at the moment

[helrazor]

What year is your V70?

PH

[monsterdark]

1999 T plate classic model with ME7

[helrazor]

Is that the the older body or the newer one?, Im not sure when they changed.

PH

[Wobbly Dave]

My 850 has a 2.5" Stainless cat back system - TME - wot I blagged from a mate. Quality and the sound is great, yet subtle enough to be unobtrousive above 3000rpm

[helrazor]

Anybody fab there own cat back system, seems it would be cheaper than a Kit? Also does anybody have a source for Cats? I'm glad to finaly see some action in this post.....

PH

[Bracer]

Custom made 2.5 inch cat-back with a 4 inch inward rolled tail pipe.

[Bracer]

I've got a couple of sound clips too, if you would like to here it PM me your email address.

[helrazor]

Nice ass , is the rest of it in the Gallery? If so I'll have to check it out, really nice car. Trailer Hitch?

PH

[Bracer]

Nice ass , is the rest of it in the Gallery? If so I'll have to check it out, really nice car. Trailer Hitch?

PH

There are quite a few here.

http://www.volvot5.co.uk/volvogaller...s.php?album=16



But the Full collection is here.

http://www.cardomain.com/memberpage/639353/1

[helrazor]

OK, thanks Bracer. First off...I see a lot of 2.5 Diameter talk, why not 3", thats what I'm doing with my my 1983 Turbo, it seems to be what everybody is having the most success with on the older cars. (B21, B23 ect) How do you think this would work on the T5's, from what I gather, a huge exhaust makes for a happier turbine.

PH

[helrazor]

seems we have two threads now re: exhaust, so I'm just gonna' bring it all back to the "Exhaust Mods" thread if that's OK

PH

[Bracer]

OK, thanks Bracer. First off...I see a lot of 2.5 Diameter talk, why not 3", thats what I'm doing with my my 1983 Turbo, it seems to be what everybody is having the most success with on the older cars. (B21, B23 ect) How do you think this would work on the T5's, from what I gather, a huge exhaust makes for a happier turbine.

PH

On the 850 / S70 / V70 Etc you will struggle to get 3" over the rear axle and in some cases the pipe needs to be crushed flat to gain enough clearance for the suspension travel + you wont see any gain between 2.5 and 3" and in some cases 2.5" will keep the gasses hotter and create a faster flow.

[helrazor]

I'm inclined to agree with you, this topic always ends up with exhaust temp./exhaust exit speed chat. It's really a mystery, and I guess every application a little diff. I still plan on using 3" tube under my '83, there is tons of room under there. Sounds like the clearence issue would be the main concern on the T5's though..... Maybe the 3" does better on the older cars due to the manifolds being more restrictive right out of the head therefore slowing down and keeping gases hotter? I dunno....

PH

[Bracer]

I'm inclined to agree with you, this topic always ends up with exhaust temp./exhaust exit speed chat. It's really a mystery, and I guess every application a little diff. I still plan on using 3" tube under my '83, there is tons of room under there. Sounds like the clearence issue would be the main concern on the T5's though..... Maybe the 3" does better on the older cars due to the manifolds being more restrictive right out of the head therefore slowing down and keeping gases hotter? I dunno....

PH

Could have a point there

[helrazor]

We need some clinical studies on this subject, or some dynos!!!

PH

[Bracer]

We need some clinical studies on this subject, or some dynos!!!

PH

My 2.5" cat-back showed gains throughout the rev range, but most significant was the reduced spool up time and the beautiful sound