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JCW Airbox or GTT induction?
Moderators: Dave, cooper_sport, Neil the Hat, BlackFerret, Matt
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wrinkley_ninja
Thu Mar 13 2008, 05:29PM
Registered Member #536
Joined: Wed Mar 12 2008, 04:26PM
Location: Dorchester
Posts: 4
 Hi

I was after a JCW airbox for my 2002 cooper s, but someone mentioned the GTT Cold air induction kit, Im just wondering which one is best, I know that the JCW one only fully opens up at 4000 revs so its fairly quiet up to that point, just how noisy is the GTT Kit? as i dont want to wake up babies and set off car alarms around town! also what kind of performace gains cound you expect from a GTT kit on a stock cooper S?

Cheers for the advice

Rich
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Dave
Thu Mar 13 2008, 05:42PM
Mini Turbo'd


Registered Member #140
Joined: Mon Mar 13 2006, 12:00AM
Location: Southampton
Posts: 2481
 Hi,


GTT wins hands down due to the design of the ram pipe and large filter. The Works is a little more for show and GTT even do an upgrade filter for the Works box to increase the air flow.

I wouldnt say the GTT is that much more noisy as the only sound you get is the supercharge anyway. Being supercharged you dont get the induction roar of an NA car.

John might even post up his rolling road findings for the GTT filter.

http://www.gtt.uk.com/parts1.asp


Image: http:// www.scnm.co.uk/ e107_files/public/1205430131_140_FT46229_527d_1.jpg
Image: http://www.scnm.co.uk/e107_files/public/1205430131_140_FT46229_p3131184_large_.jpg

MINI Project 370hp and counting... : MINIProject.co.uk
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cooper_sport
Thu Mar 13 2008, 06:16PM
and my flaming MINI


Registered Member #7
Joined: Mon Oct 03 2005, 11:00PM
Location: Bournemouth
Posts: 814
 What Dave said is all correct. The GTT induction will not make the car any much louder, all you will hear is the supercharger sound more when on full gas. For normal driving around it's fine.

The performance gains you are looking at are 5bhp on a standard Cooper S. I have the rolling road results to prove this but the best gain you will get is on the torque curve and especially lower down on the rev range

John



[ Edited Thu Mar 13 2008, 06:29PM ]
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THEWORKSMINI
Thu Mar 13 2008, 07:08PM

Registered Member #486
Joined: Sun Dec 09 2007, 09:37AM
Location: Alton Hampshire
Posts: 93
 The GTT induction kit will compliment any future tuning you do, the JCW is likely to be restrictive if you are considering a reduction pulley etc.
www.detailperfection.com
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hyperblue
Sat Mar 15 2008, 06:00PM

Registered Member #270
Joined: Thu Sep 28 2006, 11:00PM
Posts: 14
 I may have a GTT CAI for sale... Cooper_sport, did you drill the holes in the plastic bulkhead to allow more air from the scuttle area to be available??

[ Edited Sat Mar 15 2008, 06:01PM ]
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wrinkley_ninja
Sat Mar 15 2008, 10:13PM
Registered Member #536
Joined: Wed Mar 12 2008, 04:26PM
Location: Dorchester
Posts: 4
 No, Im a little wary of anything that involves drilling holes! I think Im sold on the GTT induction though. It would complement the GTT210 package that I might want in the future., when I can afford it!
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sillycargt4cs
Sat Mar 15 2008, 11:23PM
Closet MINI lover!!!!!!!!!!

Registered Member #82
Joined: Sat Feb 18 2006, 12:00AM
Location: southampton
Posts: 143
 you dont need to drill holes,that section can be removed and refitted when returning back to stock
www.minitorque.com
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hyperblue
Sun Mar 16 2008, 09:40AM

Registered Member #270
Joined: Thu Sep 28 2006, 11:00PM
Posts: 14
 Well I didn't drill holes or remove the plastic section... Had it fitted and lost power... Roland said I should try removing the section for best results... Re-dynoing before and after does cost tho... So if anyone wants a CAI let me know...
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Dave
Sun Mar 16 2008, 12:42PM
Mini Turbo'd


Registered Member #140
Joined: Mon Mar 13 2006, 12:00AM
Location: Southampton
Posts: 2481
 You always loose power on the dyno when you add an open induction kit. Where as on the road you get fresh cold air and the pressure from the Cawl vents which increases power.

Personally the biggest increase is seen when you have a pulley as the requirement for air and a free flowing filter will reduce the negative psi which builds up in the inlet.
MINI Project 370hp and counting... : MINIProject.co.uk
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Dave
Sun Mar 16 2008, 12:43PM
Mini Turbo'd


Registered Member #140
Joined: Mon Mar 13 2006, 12:00AM
Location: Southampton
Posts: 2481
 Also mines still up on ebay if you want a bargain http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=180222653609&ssPageName=STRK:MESE:IT&ih=008
MINI Project 370hp and counting... : MINIProject.co.uk
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clairebear
Sat Jul 26 2008, 08:19PM

Registered Member #587
Joined: Wed Jul 02 2008, 07:20PM
Location: warwickshire
Posts: 14
 Hi i have just had the GTT CAI fitted and it makes the supercharger whine more defined.shy.png

[ Edited Tue Aug 05 2008, 01:23PM ]
Image: http:// i107.photobucket.com /albums/m282/ purplepiper125/ clairesig2.jpg
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Super c00per
Mon Jul 28 2008, 06:24AM

Registered Member #601
Joined: Sun Jul 27 2008, 09:43PM
Location: Stockbridge, Hampshire
Posts: 20
 I've only had my GT CAI on for 3 days and I've driven 300miles with it already and I love it!!! The whine is so nice a loud when you are giving it some beans. But when driving slowly you cant hear it at all!! I drilled 2 holes through to the back and I have found the car more responsive, exhaust tips have stayed clan and havent sooted up and it accelorates smother. Highly recommend!!!!
Electrifying Blue
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