exhaust specs

**mike 850** · Tuesday 5th September 2006, 11:28

going to have a cat back exhaust made up, whats reccomended for performance? 2.5 or 3 inch will i notice the difference, also how many boxes do i need, wont be doing many long journeys so droning wont matter. also what sort of gains can i expect on a rica'd t5, currently running at 277bhp and 342ftlbs

thanks

**BlackBeast** · Tuesday 5th September 2006, 11:37

For performance go for a 3" system and if droning doesnt matter go for a straight through system

**thunderace** · Tuesday 5th September 2006, 11:51

wouldn't have thought you would get much better performance as the cat is still restricting the flow, unless you have a racing or performance cat

**siamblue** · Tuesday 5th September 2006, 13:56

I have 2 boxes on mine, one before each tail pipe, not too droney, but nice on start up

**mazza** · Tuesday 5th September 2006, 18:25

go 3 matey,thats what im building at the mo.....

**devreeze** · Sunday 1st October 2006, 17:07

Originally Posted by mazza

go 3 matey,thats what im building at the mo.....

what make of exhaust are you using, im interested in getting a new exhaust downpipe ,cat etc. but need advice on what would be best to use.

**fraz13** · Sunday 1st October 2006, 18:16

I just removed the "suitcase" off mine today so all I have left is the cat, Sounds absolutely awsome

Its a full 2.5" system and to be fair I cant see a 3" making any difference below 340bhp

**BlackBeast** · Sunday 1st October 2006, 19:20

We need a sound clip fraz!!! Is it a standard cat or a race cat?

**fraz13** · Sunday 1st October 2006, 19:42

Get one sorted tomorrow

Oh and standard cat....

**wootty** · Sunday 1st October 2006, 20:18

got my 2.5 on last thursday with small centre and tail straight thru,sounds spot on.if your thinking down the lines of a full on 1.5 bar go for a race cat,mmmmm.........come to think of it my lambda sensor looked old anyway...

**tomtyres** · Sunday 1st October 2006, 20:21

wahay, i`ve got a 7in by 2in letterbox side exit connected to a 2 3/4in cat back with no boxes, she screams like the devil licking pi55 off a thistle!!!

**tomtyres** · Sunday 1st October 2006, 20:22

oh and i think my cat might not have any internals left in it???? whoops

**MattB** · Sunday 1st October 2006, 20:31

Originally Posted by fraz13

I just removed the "suitcase" off mine today so all I have left is the cat, Sounds absolutely awsome

Its a full 2.5" system and to be fair I cant see a 3" making any difference below 340bhp

Whats it like at motorway speeds Fraz??

**Waxworks** · Sunday 1st October 2006, 23:11

Originally Posted by tomtyres

wahay, i`ve got a 7in by 2in letterbox side exit connected to a 2 3/4in cat back with no boxes, she screams like the devil licking pi55 off a thistle!!!

Yes i can vouch for that, i was chasing Tom to be nosey down the greatstone coast road and it sounded awesome!!
Nice car m8, does this look familiar?

Two T5's by the seaside! lol

**tomtyres** · Monday 2nd October 2006, 00:29

Wahay, nice 1 chief!!! I must say you have a very fine taste in automobiles!!!

**Wobbly Dave** · Monday 2nd October 2006, 10:49

Originally Posted by Waxworks

Yes i can vouch for that, i was chasing Tom to be nosey down the greatstone coast road and it sounded awesome!!
Nice car m8, does this look familiar?

Two T5's by the seaside! lol

Another seaside pic...

http://www.bigredvolvos.co.uk/images...pool_tower.jpg

the ultimate in roof top accessories?

**Al115** · Monday 2nd October 2006, 12:09

Now side-exit interests me... any photos

**tomtyres** · Monday 2nd October 2006, 21:21

Originally Posted by Al115

Now side-exit interests me... any photos

I'm getting my digi camera back from service 2morrow pm, hopefully get a few photos of exhaust system 4 u, will put car up on ramp at work and take some detailed shots (fabricated hangers ect..) The only slight problem being that my oldest son now has a small `exhaust tip` shape burn mark on his ankle!!

he's ok and i don't think it'll happen again! (child-lock!)

**The Flying Banana** · Monday 2nd October 2006, 21:37

I see Tom you have got a bonnet mod that was made famous in MK2 Escorts running Cossy Turbos!! Have you put spacer blocks at hinges to lift the bonnet up and let the air in ..i tried that on the yellow beast at one point ..if anything it sounded ace !!!

**tomtyres** · Monday 2nd October 2006, 21:48

Originally Posted by The Flying Banana

I see Tom you have got a bonnet mod that was made famous in MK2 Escorts running Cossy Turbos!! Have you put spacer blocks at hinges to lift the bonnet up and let the air in ..i tried that on the yellow beast at one point ..if anything it sounded ace !!!

ooops, you've found me out. but my mk2 escort was only a 1.6

. anyway the main reason i fitted the bonnet raisers (two 15mm nuts to widen the gap) was for santa-pod, my temp used to go up alot more before i lifted the bonnet! the exhaust manifold and turbo are both able to vent their toasty gases outward instead of into my engine bay

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