Audi S3 GT3582R stroker Build (previously GT3071r)
- Thread starter tufftybloke
- Start date
Same here, Ian made my custom turbo-back at Blueflame, then made me a bigger custom dp at Pipewerx.
Not had much to update recently as I have been a bit busy but had some bits through today which should finally finish off this part of the project.
I was looking to get a custom exhaust from one of the many custom exhaust places but after hearing a few horror stories decided I would just build my own.
Received some bits today from Jetex and Speedflow....
The Speedflow pipe is to replace the water pipe from the turbo to the block as this was leaking.
The silencers are 3" bore and the rear box is 3" in and 2 x 2.5" out which will be attached to a couple of slash cut tail pipes.
Shouldn't be any restriction with these babies....
Should be starting work on this at the weekend, just need to order up some clamps.
Once that is done then I can get the mapping finished ready for the dyno in December.
That will be more or less it for now... water/meth injection next I expect ;P
<tuffty/>
I was looking to get a custom exhaust from one of the many custom exhaust places but after hearing a few horror stories decided I would just build my own.
Received some bits today from Jetex and Speedflow....
The Speedflow pipe is to replace the water pipe from the turbo to the block as this was leaking.
The silencers are 3" bore and the rear box is 3" in and 2 x 2.5" out which will be attached to a couple of slash cut tail pipes.
Shouldn't be any restriction with these babies....
Should be starting work on this at the weekend, just need to order up some clamps.
Once that is done then I can get the mapping finished ready for the dyno in December.
That will be more or less it for now... water/meth injection next I expect ;P
<tuffty/>
Backdraft
Guest
not a lot of restriction there.. bwa ha ha ha haaaaaaaaaaaaa
RoAr goes the S3
Its gonna be loud!
Not helping!!!! LOL
My neighbours are gonna love me
Meh.... bring it on
<tuffty/>
Thanks mate... will try and get some vids and proper pics of the car when the bl**dy weather sorts its shizzle out!!
Anyhoo....
Been busy today, with the elite fabrication skillz of Tony and Bill occasionally mumbling 'BRAAAAAAARRRRRRRRPP!!' I have managed to piece together the exhaust system.
I have been running the OEM system since I fitted the BT.
3" stainless steel all the way and pretty much straight through...
...only joking ;P
Pics of the progress...
...now needs to be welded and the brackets worked out...
Once fitted I will sort the tail pipes. 2 x 2.5" slash cut is the current trian of thought but will see what looks good when its all on there.
<tuffty/>
Excellent work, looks really professional. None of the pancaking effect trying to aviod obstucles etc. Badger5 should think about fabing exhausts for the rest of us.
Your throttle response will be a bit more peppy i think.
Your throttle response will be a bit more peppy i think.
you should of left it like that3" stainless steel all the way and pretty much straight through...
<tuffty/>
Righty....
Exhaust is on.....
...and here is a somewhat dodgy video...
Exhaust
I have a small rattle which I knew about but will wait for the system to settle before sorting that out. Its not as loud from the outside as we were expecting but tbh it is a little boomy inside the car which may settle down but I may have to consider a different back box....
Does sound good under boost though
<tuffty/>
Exhaust is on.....
...and here is a somewhat dodgy video...
Exhaust
I have a small rattle which I knew about but will wait for the system to settle before sorting that out. Its not as loud from the outside as we were expecting but tbh it is a little boomy inside the car which may settle down but I may have to consider a different back box....
Does sound good under boost though
<tuffty/>
i think the blueflame rearbox is a better design than jetex's one.. which is completely straight thru.
3" also on the polo (blueflame) and its much quieter (boom wise)
3" also on the polo (blueflame) and its much quieter (boom wise)
Update....
Slightly disappointing result on the rollers today (the day was good though, well done all who attended)....
Last time I was on the rollers I got 383bhp and that (as it turns out) was with a split vacuum pipe to the FPR which gave a boost leak and reduced the FPRs ability to control fuel properly (which is why the duty cycle on my 630cc injectors was nearly maxxed) and a std exhaust which was affecting the EGT's and stifling the engine at high RPM.
I fixed the pipe and the mapping (predictably) was overfuelling so reverted back to a previous known good one which I have been running since as Bill has had far too much on to sort it properly and I wanted to get the exhaust on before I sorted the mapping out.
As I don't thrash my car within an inch of its life, the map has seemed ok and I haven't done any logging since it was put on. Did some logging today and it seems leaner before boost and then just goes bonkers and dumps fuel from around 5.5k...
Needless to say its back to the drawing board and I will do some more logging to see what's having an effect on the fuelling. I thought it was EGT's initially but using my Liguid gauge on the way home I couldn't get EGT's over 960 degrees... Thinking I will log EGT's vs Fuelling and see if there is any correlation to rule it out, the alternative is to move the EGT probe as it may not be in the right place where it is now.
<tuffty/>
Slightly disappointing result on the rollers today (the day was good though, well done all who attended)....
Last time I was on the rollers I got 383bhp and that (as it turns out) was with a split vacuum pipe to the FPR which gave a boost leak and reduced the FPRs ability to control fuel properly (which is why the duty cycle on my 630cc injectors was nearly maxxed) and a std exhaust which was affecting the EGT's and stifling the engine at high RPM.
I fixed the pipe and the mapping (predictably) was overfuelling so reverted back to a previous known good one which I have been running since as Bill has had far too much on to sort it properly and I wanted to get the exhaust on before I sorted the mapping out.
As I don't thrash my car within an inch of its life, the map has seemed ok and I haven't done any logging since it was put on. Did some logging today and it seems leaner before boost and then just goes bonkers and dumps fuel from around 5.5k...
Needless to say its back to the drawing board and I will do some more logging to see what's having an effect on the fuelling. I thought it was EGT's initially but using my Liguid gauge on the way home I couldn't get EGT's over 960 degrees... Thinking I will log EGT's vs Fuelling and see if there is any correlation to rule it out, the alternative is to move the EGT probe as it may not be in the right place where it is now.
<tuffty/>
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