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Author modified down pipe on car
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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19th Oct 10 at 22:10   View User's Profile U2U Member Reply With Quote
with oulton park coming up in a few weeks and worried abvout the 105db limit, decided to ask my mate if he could modify the downpipe on my car and add a centre box. previously the wastegate was vented to the floor screamer pipe style. now its back into the downpipe.









its a bit quiter than it was before. sounds a fair bit different to drive actually.

http://www.youtube.com/watch?v=tVBazHNtGFI

before

http://www.youtube.com/watch?v=_aEWrBoRPxs

modified downpipe and centre box

hoping it will pass the 105db limit now
Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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19th Oct 10 at 22:11   View User's Profile U2U Member Reply With Quote
Do you have an iphone or know anyone with one? Sure you can get a db meter on them

They take the reading parked up and you rev to 3/4s of your max RPM.

[Edited on 19-10-2010 by Adam_B]
Rob B
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Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
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19th Oct 10 at 22:13   View User's Profile U2U Member Reply With Quote
Sounds quiet enough now i reckon

The drive by limits are lower though
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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19th Oct 10 at 22:14   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Adam_B
Do you have an iphone or know anyone with one? Sure you can get a db meter on them

They take the reading parked up and you rev to 3/4s of your max RPM.

[Edited on 19-10-2010 by Adam_B]


yeah ive got an igay and i actually have a db meter on it. actually never thought about it until you just said
Cole
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Registered: 11th Nov 02
Location: eastbourne Drives:zafira sold now a qashqai
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19th Oct 10 at 22:17   View User's Profile U2U Member Reply With Quote
Well you know what to do tomorrow barnes don't ya
Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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19th Oct 10 at 22:24   View User's Profile U2U Member Reply With Quote
No idea how accurate they are but should give you an idea.

I think mine should be ok but id like to get it checked just in case. Trouble is i dont know anyone well enough with a reet posh iphone to ask them to hold it next to my exhaust

[Edited on 19-10-2010 by Adam_B]
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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20th Oct 10 at 16:56   View User's Profile U2U Member Reply With Quote
will give it a check on saturday. id say its a load quieter than it was even just driving at say 60 and 30 mph.
mike56gte
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Registered: 23rd Jun 09
Location: Fife, scotland Drives: Audi S3
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20th Oct 10 at 17:09   View User's Profile U2U Member Reply With Quote
will this effect the power in anyway?
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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20th Oct 10 at 17:17   View User's Profile U2U Member Reply With Quote
maybe a bit yeah. its going on dyno in a fwe weeks so will find out then unless jdm can fire it back on if he gets some free time before next weekend.
Cole
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Registered: 11th Nov 02
Location: eastbourne Drives:zafira sold now a qashqai
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20th Oct 10 at 17:20   View User's Profile U2U Member Reply With Quote
So much quieter will be fine at oulton I'm sure
andyc1234
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Registered: 7th Nov 06
Location: Lancashire
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20th Oct 10 at 17:20   View User's Profile U2U Member Reply With Quote
why do the screamer so long?
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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20th Oct 10 at 17:22   View User's Profile U2U Member Reply With Quote
smoothest place to make it enter back into the downpipe. the first thought shorter version would have been 90 degree into downpipe at a 90 degree angle to the flow.
andyc1234
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Registered: 7th Nov 06
Location: Lancashire
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20th Oct 10 at 17:24   View User's Profile U2U Member Reply With Quote
furry muff good work ken
Kurt
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Registered: 23rd Oct 05
Location: Hi
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20th Oct 10 at 17:29   View User's Profile U2U Member Reply With Quote
Good work ken, can't wait to do battle round oulton now
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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20th Oct 10 at 17:30   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Kurt
Good work ken, can't wait to do battle round oulton now


you will win so its not exactly a battle
BarnshaW
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Registered: 25th Oct 06
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20th Oct 10 at 17:37   View User's Profile U2U Member Reply With Quote
sounds mental that, can you not use or buy a DB meter?
Ellis
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Registered: 11th Sep 07
Location: Aberdeenshire
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20th Oct 10 at 18:43   View User's Profile U2U Member Reply With Quote
Real tidy job that, I like it
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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20th Oct 10 at 19:45   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by BarnshaW
sounds mental that, can you not use or buy a DB meter?


will ask if anyone has one. will try it with phone for now. probably not a lot to buy but id never really need to use one apart from this once
BarnshaW
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Registered: 25th Oct 06
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20th Oct 10 at 19:51   View User's Profile U2U Member Reply With Quote
or take it to a MOT station as i guess they use DB metres maybe?
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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20th Oct 10 at 19:53   View User's Profile U2U Member Reply With Quote
point, will ask at work if we have one.

 
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