APS High Flow Cold Air Intake 65mm
18 April 2007, 11:31 PM
#1
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APS High Flow Cold Air Intake 65mm
I'm thinking of buying one of these for my 03 STI PPP.
Will there be any performance benifit from fitting it straight away?
I see APS do a larger 70mm version and it states the car requires additional tunning once fitted but there is no mention of required tuining with the 65mm one, is this the case?
Any recomendations over which filter i should by. I like the red finnish of the APS one as it matches the inlet manifold.
Cheers
Will there be any performance benifit from fitting it straight away?
I see APS do a larger 70mm version and it states the car requires additional tunning once fitted but there is no mention of required tuining with the 65mm one, is this the case?
Any recomendations over which filter i should by. I like the red finnish of the APS one as it matches the inlet manifold.
Cheers
30 December 2007, 10:36 AM
#3
Digging up an old post as I'm interested in the answer and it saves me from creating a new topic. (and it proves that occasionally people do use the search function!)
Sooooo - opinions please!
Sooooo - opinions please!
30 December 2007, 11:18 AM
#4
I see APS do a larger 70mm version and it states the car requires additional tunning once fitted but there is no mention of required tuining with the 65mm one, is this the case?
I don't think you would see much benifit from fitting one without a remap to make the most of the extra airflow.
30 December 2007, 05:11 PM
#5
So what would be the power limits of the 65mm CAK compared to the 70mm CAK? Anyone? 
I guess that the reason a remap is recommended for the 70mm is because the airflow overwhelms the standard settings of the MAF?
I guess that the reason a remap is recommended for the 70mm is because the airflow overwhelms the standard settings of the MAF?
30 December 2007, 05:46 PM
#6
If you increase the size of the pipe where the MAF is reading air flow without rescaling it, more air volume will pass into the engine than the ECU knows about and you risk running lean and getting det. Well, that's the way I understand it anyway.
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30 December 2007, 06:03 PM
#8
DS Automotives
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They arn't cheap - but they are very very very pretty.
I'm not exactly sure how the ECU handles the MAF data in all honesty - I just guessed that the MAF measured the +/- airflow against a set level and adjusted fueling to match, but could only adjust so far away from its set level? But an expert answer in idiot speak would be appreciated... by me at least
Either way, too much air getting in with too little fuel is a "BAD THING". (See.. I've learnt something) I guessed that the 65mm CAK airflow was in the limits of the ECU could adjust for, but the 70mm would make your ECU run off wimpering in the corner.
*DANGER: LINK POSES A SERIOUS THREAT TO YOUR BANK BALANCE*
They arn't cheap - but they are very very very pretty.
I'm not exactly sure how the ECU handles the MAF data in all honesty - I just guessed that the MAF measured the +/- airflow against a set level and adjusted fueling to match, but could only adjust so far away from its set level? But an expert answer in idiot speak would be appreciated... by me at least
Either way, too much air getting in with too little fuel is a "BAD THING". (See.. I've learnt something
) I guessed that the 65mm CAK airflow was in the limits of the ECU could adjust for, but the 70mm would make your ECU run off wimpering in the corner.
Last edited by Prasius; 30 December 2007 at 06:09 PM.
30 December 2007, 08:48 PM
#13
I'm not exactly sure how the ECU handles the MAF data in all honesty - I just guessed that the MAF measured the +/- airflow against a set level and adjusted fueling to match, but could only adjust so far away from its set level? But an expert answer in idiot speak would be appreciated... by me at least
Either way, too much air getting in with too little fuel is a "BAD THING". (See.. I've learnt something) I guessed that the 65mm CAK airflow was in the limits of the ECU could adjust for, but the 70mm would make your ECU run off wimpering in the corner.
Either way, too much air getting in with too little fuel is a "BAD THING". (See.. I've learnt something
) I guessed that the 65mm CAK airflow was in the limits of the ECU could adjust for, but the 70mm would make your ECU run off wimpering in the corner.
30 December 2007, 09:42 PM
#15
Got a 70mm one fitted to the same car as u M8 and it works a treat. I'd of thought you'd need remapping which ever one u fit as the volume of cold air is increased so much it'll make the car run very lean without.
As Dynamix says the MAF does need to be rescaled with the 70mm one. Mocom fitted and mapped mine in conjunction with porting the headers and downpipe, and the difference to the car was night and day. I gained almost 30 Bhp @ the wheels
As Dynamix says the MAF does need to be rescaled with the 70mm one. Mocom fitted and mapped mine in conjunction with porting the headers and downpipe, and the difference to the car was night and day. I gained almost 30 Bhp @ the wheels
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