Pickup
Member
Registered: 25th Nov 03
Location: Newcastle
User status: Offline
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well, would you say to follow the tutorial on this site? do the bore sizes make any difference ie the alternations between 1/4 and 1/2 inch?
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Daimo B
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Registered: 20th Mar 00
User status: Offline
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I can't remember how it works now.
Something like, smaller bore = Less peak power but more torque, larger bore = more peak power and less torque.
But which way arounbd it is I can't remember.
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Pickup
Member
Registered: 25th Nov 03
Location: Newcastle
User status: Offline
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what should i be aiming for then, more peak power or more torque? all i know is i want the best performance out of my car as i can get (want it to be fast)
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Daimo B
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Registered: 20th Mar 00
User status: Offline
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Personnally im a torque man. You want a mixture of good torque and power.
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Pickup
Member
Registered: 25th Nov 03
Location: Newcastle
User status: Offline
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so if im to drill my airbox, would mixing the bore sizes make a difference ?
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Daimo B
Member
Registered: 20th Mar 00
User status: Offline
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thats 2 questions.
Theres some guides on here how and where to drill the airbox 
Mixing the size bores, im not sure tbh. I mean, i know of peopel on here running a grp A 2.5" bore exhaust on 1.4/1.6 engines. YEt im only running a straight through 2" bore on my 2.0.
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DangerousDave16v
Member
Registered: 20th Feb 03
User status: Offline
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Dont forget if you make the holes too small that distinctive ecotec sound wont be as loud!
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Daimo B
Member
Registered: 20th Mar 00
User status: Offline
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quote:
Originally posted by corsa_godfather
throttle bodies bout£2500.give u 150 ish bhp if used with de cat pipe,uni chip etc
Bought £2000
160+bhp
I wouldn't have a unichip with throttle bodies 
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Andy Stocker
Member
Registered: 31st Aug 00
Location: Herts Drives: Porsche 911
User status: Offline
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C13 was r/r'd twice.
99 bhp the 1st time & 101 bhp the 2nd time.
Had a Big 'ol Pipercross cone & 2 1/4" full Powerflow system
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luca2020
Member
Registered: 26th May 02
Location: Maidstone, Kent
User status: Offline
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yer lol dont use a uni chip with tbs, anyway if u get them from sbd u get proper engine management anyway
the guide i wrote was just to show where to drill and how big to make the holes, the only reason ive got some 1/4" holes left is cos i couldent fit 1/2" holes in there, thats why theres alot more 1/2" holes
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jr
Member
Registered: 20th May 02
Location: Kent
User status: Offline
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mine in runs 136bhp with the following mods, although don't know what it feels like as engines not in
SBD performance manifold
264 degree shrieck cams
Uprated valve springs and caps
Pocketed pistons
Mantzel powerbox
Omex ecu
7500 raised rev limit
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