Thread: BMC CDA loosing performance with CAF

Quote: Originally Posted by kendoskeg I see mate. Did you just saw off the end bit of the old CAF? Yeah just cut a bit off cause could'nt be bothered to take the bumper off lol. Quote: Originally Posted by vi-cious on the same ideas i had my front bumper off today to sort out my knackered washer pump n was looking at my cold air feed and how some peeps have cut the front valance under the n/s headlight and was wondering has anyone heard...

Surely not. If you have a pipe with minimal bends placed in such a way that the orifice is pointed at direction of travel, the airflow into the pipe would be stronger than any resistant force that could create a vacuum.

Quote: Originally Posted by StuBlake13 The CDA and the Viper both are less restrictive and allow better flow of air while also keeping tenmperatures down. Therefore mounting the CAF to the standard air feed that used to go into the box will be just as good. Its where I am have my viper going in the coop. Sorry, but I disagree. Firstly the diameter is smaller, secondly it has crazy right angle bends, thirdly the air is stale.

Even having the CAF routed down the feed is compromised with a nice bend, its no different to having it connected to the OE feed. Connecting the CAF to the OE feed will still give more than enough air for the induction kit to cope with, besides we're talking about 1-2bhp. Looking at the supposed 'daddy' of industion kits, the ITG Maxogen, the CAF that comes with that is a terrible design. Yes, its the best that's...

Quote: Originally Posted by kendoskeg Surely not. If you have a pipe with minimal bends placed in such a way that the orifice is pointed at direction of travel, the airflow into the pipe would be stronger than any resistant force that could create a vacuum. Note I said opening at right angles to direction of travel. See OP, He said he had it pointed straight down.

ive got mine pointing straight down yea, unless you want to cut bit's of bumper. plus i thought cold air rises so pointing down makes sense doesnt it ?

Quote: Originally Posted by david.c If you have the intake pointing straight down you could be creating a vaccum effect and actually causing a depression in the manifold. Explain please? Im not sure I quite follow you

on the same ideas i had my front bumper off today to sort out my knackered washer pump n was looking at my cold air feed and how some peeps have cut the front valance under the n/s headlight and was wondering has anyone heard of fitting a narrower honda radiator so the gap is straight to the lower grill with no turns/bends? im going to a few scrappies to have a measure up n see what i can come up with but my question is does anyone have any...

Most likely the difference in noise. Same as an open cone making people believe they have gained power. Only lots of sharp angles is going to create any issues for the CAF.

Quote: Originally Posted by Stu Most likely the difference in noise. Same as an open cone making people believe they have gained power. Only lots of sharp angles is going to create any issues for the CAF. Yeah, similar to the guy at my local tyre emporium, he insists that after he removed the dump valve from his 306 DERV (on my recommendation) that he lost power. He has since reinstated the dump valve! Anything that makes a lot of noise will...