drilled back / mid box

margi · Joined: 28 Mar 2009 Posts: 122

hi,

i have read in a few places some people have drilled their exhausts to add a tiny bit of oomph to their cars,

i had a look on here but couldn't see any thing, has any one done it here? and if so, where bouts do you need to drill?

many thanks

karissabob · Posted: Mon Feb 08, 2010 8:51 pm Post subject:

Ummmm no, that won't work Rolling Eyes

_________________
JAE Award forum votes
JAE Club Stand Passes - Buy yours here
Show & Shine poll

jasonwoolcott · Posted: Mon Feb 08, 2010 8:58 pm Post subject:

no chance, that wont add any 'oomph' at all, only a lot of noise and a great spot for the rust to start!
_________________
Wake me up when your VTEC kicks in.

offshore4ft · Posted: Mon Feb 08, 2010 9:09 pm Post subject: Re: drilled back / mid box

HughieW · Posted: Mon Feb 08, 2010 9:22 pm Post subject:

To sum up, never drill your tailpipe. Either car nor person. Unless you're into that sort of thing. Cue "Maggie"! Laughing

_________________

Hairy Bob · Posted: Mon Feb 08, 2010 11:14 pm Post subject:

It'll allow the evil exhaust gasses into your car... it's piped out the arse for a reason thumbup

Ad
_________________
Two pedals are better than three...

lewp91 · Posted: Mon Feb 08, 2010 11:21 pm Post subject:

my dad has a hole in his zorst on the van..
the cab stinks cos of it...

holes wont release pressure ect...
a bigger bore full lengh exhaust maydo though Wink

_________________
TeamBG If You're Not GOLD Your Cold Wink

seank90 · Posted: Tue Feb 09, 2010 12:02 pm Post subject:

all N/A engines need a certain amount of back pressure to give them a better kick and more mpg, so this is only draining the back pressure loosing your power. thats why if you have a hole in your exhaust it will drop in speed a bit. the way to go would be new headers and a sport cat (maybe) just to speed up things and let your engine breathe that little bit more. haveing a huge bore exhaust works well wih turbos because they dont require any backpressure compared to N/A engines.

marcrs · Posted: Tue Feb 09, 2010 1:16 pm Post subject:

I've got a big hole in mine...it's at the end Laughing

exhausts need to be "tuned" to suit the engine - too large a diameter will have a negative effect on performance, as will too small. Holes affect the venturi, which is bad.
_________________
JAE Award forum votes
JAE Club Stand Passes - Buy yours here
Show & Shine poll

Roc · Posted: Tue Feb 09, 2010 3:22 pm Post subject:

Yep, if it's too large, the gas flowed is slowed down and you lose performance.
_________________

Mark - www.fordprobestore.co.uk - 323F Specialist.

mazdaman88 · Posted: Tue Feb 09, 2010 6:02 pm Post subject:

i appologise for my advice iv noticed it has been removed crybaby