Cold air induction kit...?

Post Mon Jul 17, 2006 5:28 pm

Hi folks,

I've currently got a K&N 57i induction kit on my car (modded 325i), I have no complaints about the filter itself (quality, etc.) however she was drawing in hot air from the engine bay (she was losing power on a dyno run

) so I fabricated a bespoke cold air system using plumbing supplies from B&Q (as you do).

Unfortunately I believe my bespoke cold air system - although keeping the hot air out, as designed - is producing another problem, that is not letting enough air in at high revs! She feels like she's losing power, almost topping out at 4500~5000rpm, which she didn't do before.

So, I am considering investing in a proper cold air system, preferably one that works! That's where yourselves come in, have any of you got experience / can you recommend a good one?

I've found these at the usual outlets:
EvoSport Carbon Fibre Super Induction Kit
Pipercross Viper Kit
K&N GenII Kit*
CDA Kit

*don't know if this is available for an E30 325i...?

The EvoSport & CDA kits seem to be 'universal' whereas the Viper kit is made to fit (and reflected in the price).

Are there any other options out there?

What do you think of these?

Ta much for the help folks.

Post Mon Jul 17, 2006 5:29 pm

What about itg from the zone shop?

Post Mon Jul 17, 2006 6:20 pm

maxfield wrote:What about itg from the zone shop?

I tried to look in the zone shop but on every page I just get the same message: "There are currently no products"

Post Mon Jul 17, 2006 6:21 pm

I've got the ITG filter on my 325 cab and its wicked, go in the forum for the zone shop and see sal's contact details thread whilst the shop is being updated, his user name on the zone is m5pilot

Post Mon Jul 17, 2006 6:22 pm

PM M5pilot (sal) he runs the zone shop

Post Mon Jul 17, 2006 6:49 pm

i went to the local tip and raped a few hoovers for their flexi pipe... and then i directed them towards the filter.. it worked on my corsa anyway...

Post Mon Jul 17, 2006 8:58 pm

Im suprised it didnt hoover the corsa up.

Post Mon Jul 17, 2006 9:09 pm

gooner1 wrote:Im suprised it didnt hoover the corsa up.

Post Mon Jul 17, 2006 9:37 pm

I have the bmc cda filter on my 325, sounds awesome and fits perfectly into the gap left by the OE airbox.

Not cheap though

Post Mon Jul 17, 2006 11:37 pm

gooner1 wrote:Im suprised it didnt hoover the corsa up.

the air filter was bigger than the engine, it used to suck in small animals...

but then i went from corsa to bmw so something went right along the line somewhere

Post Tue Jul 18, 2006 9:44 am

cliffybabe wrote:I've got the ITG filter on my 325 cab and its wicked, go in the forum for the zone shop and see sal's contact details thread whilst the shop is being updated, his user name on the zone is m5pilot

Does the ITG filter come with a heat shield & cold air ducting?
Have you seen any power gains?

d6dph wrote:I have the bmc cda filter on my 325, sounds awesome and fits perfectly into the gap left by the OE airbox.

Not cheap though Confused

I assume your car still pulls cleanly thru the whole rev range, she doesn't sound or feel 'strangled' (like she's gasping for air...)?
Is your engine modified in any other way?

Thanks for your help folks!

Post Tue Jul 18, 2006 9:48 am

garyp_E30_325i wrote:
cliffybabe wrote:I've got the ITG filter on my 325 cab and its wicked, go in the forum for the zone shop and see sal's contact details thread whilst the shop is being updated, his user name on the zone is m5pilot
Does the ITG filter come with a heat shield & cold air ducting?
Have you seen any power gains?

d6dph wrote:I have the bmc cda filter on my 325, sounds awesome and fits perfectly into the gap left by the OE airbox.

Not cheap though Confused
I assume your car still pulls cleanly thru the whole rev range, she doesn't sound or feel 'strangled' (like she's gasping for air...)?
Is your engine modified in any other way?

Thanks for your help folks!

ITG filter is not shielded, unless you do it yourself.

BMC appears to be the daddy but is 190 sheets with the kit

Post Tue Jul 18, 2006 6:13 pm

massive wrote:ITG filter is not shielded, unless you do it yourself.

BMC appears to be the daddy but is 190 sheets with the kit

I'll give the ITG a miss then (basically same as I already have with the K&N 57i).

If the BMC CDA kit really works I wouldn't necessarily begrudge the Ã‚£190, but if it made no difference I'd be right p*ssed

If that were the case I'd rather spend the money on an ARB kit instead, mmm...