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Discussion Starter #1
Hi I have just booked my R56 MCS in to have an Alta CAI fitted at Lohen. Is there any major draw backs to this modification, If so please let me know.

Also, changing all of the turbo and intercooler hoses over to silicone does this have any affect on performance or does it just look cool.
 

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You should feel a difference, the parts all compliment each other. It certainly wont feel worse!
 

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You should feel a difference, the parts all compliment each other. It certainly wont feel worse!
I'm not so sure about that. I've had a DIY filter on my car and it did feel worse, sure it sounded good hearing the turbo sucking and the blow off valve but that started to bore after a while. It sounds a lot louder outside of the car and makes you sound like a boy racer all the time.

Much worse though was a loss of low end torque and the feeling that the car took a small amount of time to 'recover' after gear changes. Its hard to explain really but I went back to the stock JCW intake and found it accelerated through gear changes much better with it.

There have been similar comments on NAM about this and open filters. I'm not sure if the Alta is any different but the only difference is that it has a small silicone elbow and was designed for US cars that have a MAF sensor that our cars do not. For what it is I think it's over priced.

I also wouldn't pay anyone to install it, it really is simple and absolutely anyone could manage it. :D

The tubes on the other hand are supposedly a PITA to fit....

Another member named Japper had the tubes installed recently and reported a loss of low end torque as he needs more revs to move up drive ways etc. Though he feels there is more torque further up the range and they smoothed the power delivery out. Hope he doesn't mind me passing these thoughts on.

I think I'd only get the tubes installed if I planned a high flow cat and maybe chip tuning also. From what I've seen on various forums the best power gains come from these two areas.
 

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Discussion Starter #4
Thanks guys for your feedback. I have spoken to Lohen and they are real stand up guys in the mini community and they say that this will have no adverse affect on performance.

I recently had my MCS serviced there and I don't think I have ever been to a more professional independent car specialist, so I will have to take there word for it. If anyone can get over to Lohen I would recommend you do so.
 

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Much worse though was a loss of low end torque and the feeling that the car took a small amount of time to 'recover' after gear changes. Its hard to explain really but I went back to the stock JCW intake and found it accelerated through gear changes much better with it.
From what i found that is because the turbo is stalling. (the chatting or fluttering you can get when you come off the throttle) more than likely due to the higher flow of air to the turbo. I cured this by fitting a JCW turbo inlet hose. Turbo stall has all but disappeared and in gear acceleration has improved. But i do have to concede to the low down torque not being as instant, but as everything in life you adjust your driving to suit. I certainly love my set-up and i know you will as well benjamin491. I got 192bhp on a dyno the same day a stock R56 S pulled 175bhp so I'm happy!
 

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Discussion Starter #6
I want to change over all to hoses when I have the money to install a better intercooler. Lohen are testing new intercoolers i think to see which give the best gains, so i will wait and see on that one.

I will have to let you know what I think when I have had it installed!!!
 

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I had the same problem with a cai i lost my low down power and the turbo lag was just stupid. After spending a large amount of money i would not be happy having to change my "driving style" to suit, when i can have more fun and save money with the standard air intake.
 

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I had the same problem with a cai i lost my low down power and the turbo lag was just stupid. After spending a large amount of money i would not be happy having to change my "driving style" to suit, when i can have more fun and save money with the standard air intake.

We got the complete opposite on my dads cooper s ,

we fitted the alta kit and Milltek sports cat and full system,

it drives so much better we no lag and pulls better through the rev range :D
 

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We got the complete opposite on my dads cooper s ,

we fitted the alta kit and Milltek sports cat and full system,

it drives so much better we no lag and pulls better through the rev range :D
I would guess either the increase in power from the high flow cat is masking any loss from the Alta induction kit. It'd be interesting if you could test with the stock air filter and compare...
 

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Can't say the turbo lag is any worse than before with the Alta CAI, as in non existent really.
 

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We got the complete opposite on my dads cooper s ,

we fitted the alta kit and Milltek sports cat and full system,

it drives so much better we no lag and pulls better through the rev range :D
Most of the extra power and torque you are getting is from the Milltek hi-flow cat and exhaust system, this mod will have derestricted the engine.

The new Factory JCW car gets it's extra 16bhp over the dealer installed JCW 192 bhp kit from having a hi-flow cat and a slightly enlarged turbo air inlet pipe.

P.
 

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The new Factory JCW car gets it's extra 16bhp over the dealer installed JCW 192 bhp kit from having a hi-flow cat and a slightly enlarged turbo air inlet pipe.

P.
Has that been proven yet? I know the inlet pipe is different, and the cat has a different part number but not sure anyone has compared the two? Wasn't the turbo supposed to be upgraded in some way?
 

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Has that been proven yet? I know the inlet pipe is different, and the cat has a different part number but not sure anyone has compared the two? Wasn't the turbo supposed to be upgraded in some way?


The turbo on the factory car is slightly larger? But it still runs at 1.3bar boost which is the same as the stage 1 kit. The pipe that feeds air from the air filter into the turbo is slightly bigger and made from a hard plastic, not rubber.

The original cat' on the MCS is very restrictive, it strangles the engine!

P.
 
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