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  #1 (permalink)  
Old Jan 24th, 2010, 10:22 PM
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Tuning of a Mini GP

Hi guys, im hopefully going to be buying a GP in the next few weeks, just looking into tuning options, im coming from an Exige S and a Noble M12 3R so getting a few extra bhp would be nice. What sort of costs are involved in getting a GP up to around 240bhp and beyond? I had an R53 Cooper a few years ago "my first car" and loved it so pretty excited about getting into a GP. Cheers.
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Old Jan 25th, 2010, 11:12 AM
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Hi and welcome to the GP Owners Club
We will have a GP display at Bingley hall next sunday and if you could get there and chat with other GP owners about what can be done to your GP
Also have a look on this site www.minitorque.com
Good information about tuning on there


Last edited by gpmick; Jan 25th, 2010 at 06:14 PM.
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Old Jan 25th, 2010, 12:14 PM
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Smaller Pulley, Manifold, remap... That should help...
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Old Jan 25th, 2010, 07:37 PM
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Quote: Originally Posted by sef (original)
Smaller Pulley, Manifold, remap...

+ intercooler, crank pulley & iridium spark plugs


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Old Jan 25th, 2010, 08:43 PM
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There is no need to change the IC on a GP. #1657 is 260 BHP and running stock GP IC in UK.

SC Pulley, New belt, Plugs, Crank pulley, Big valve head, Shrick Valves, Shrick high lift cam, bigger injectors to keep her cool and not lean at the top end, 4/2/1 Manifold Sports cat and some good rear boxes, add a custom tune or AFPR and you are done.

In Italy

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Old Jan 25th, 2010, 11:08 PM
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Thanks guys, looking forward to getting behind the wheel!
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Old Jan 26th, 2010, 06:48 AM
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I've got a lightened crank pulley for sale if you decide to go that route...
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Old Feb 11th, 2010, 08:56 PM
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Quote: Originally Posted by Toenheel (original)
Hi guys, im hopefully going to be buying a GP in the next few weeks, just looking into tuning options, im coming from an Exige S and a Noble M12 3R so getting a few extra bhp would be nice. What sort of costs are involved in getting a GP up to around 240bhp and beyond? I had an R53 Cooper a few years ago "my first car" and loved it so pretty excited about getting into a GP. Cheers.

Not sure about BHP but this formula will get you 240+ (at the) Wheel Horse Power. Pulley, Cams, Injectors, Header, and Big Valve Head and Tune. I prefer RMW, but to each his own. Dr. Obnxs Dr Phil on NAM tested most of the intercoolers and found stock competent and GP better than most aftermarket, so keep the GP cooler. I would shy away from non-dampened harmonic balancer instead go with a 17% supercharger pulley instead of 15% and avoid the crank pulley.

GP0019
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Old Feb 19th, 2010, 01:12 PM
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Thanks for the replies guys, good news is that I have taken a deposit on my Noble and also agreed subject to viewing on a GP. Could somebody break the costs down for the individual bits just trying to get an idea how much it would cost to get to around 260bhp which will make the GP about as quick as my Exige S was.
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Old Feb 19th, 2010, 01:23 PM
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Quote: Originally Posted by Toenheel (original)
Thanks for the replies guys, good news is that I have taken a deposit on my Noble and also agreed subject to viewing on a GP. Could somebody break the costs down for the individual bits just trying to get an idea how much it would cost to get to around 260bhp which will make the GP about as quick as my Exige S was.

Just purely as a guide:

Pulley circa £150 fitted.
Janspeed mani circa £600 fitted (unless you can get a 2nd hand one)
550 Injectors circa £150
Remap circa £400
JCW CAI mod circa £50 with ITG Filter
BVH ??? circa £1.2k ??
camshaft circa £150 + fitting

Im up to around 240-250 area with just GP IC, Janspeed mani, JCW CAI mod, newman cam and custom tune... so smaller pulley, larger injectors should/could see you around 255bhp then its whether you go for a new head or not to make sure you go over 260bhp...

Best thing to do is to check out www.minitorque.com as mick suggests

Running 211whp

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Old Feb 19th, 2010, 01:32 PM
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Cheers mate will check it out now
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Old Feb 20th, 2010, 09:33 AM
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But is it really a good idea to mess about with the GP ?

you are most likely going to seriously de value the car ,I am very tempted to do the same with mine but lots of GP owners have advised me not to mess with a future classis car .
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Old Feb 20th, 2010, 11:38 AM
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What power is a gp in standard trim? You could be right about it becoming a classic, good standard models will always be worth more in the long run, but fun is fun. I actually had an original mini cooper s, believe me i wished i had kept that, it would have ben worth a fortune now.
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Old Feb 26th, 2010, 06:05 PM
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standard GP 218bhp
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Old Mar 5th, 2010, 11:20 AM
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How will a ITG Filter help the GP.

any more BHP, exhaust sound,

any help please.

Neil.

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