Author Topic: REAL Cold Air Intake (Read 14360 times)

1991 E30 M42 · « **Reply #15 on:** July 23, 2009, 08:50:18 PM »

I made the cai myself and purchased the carbon mat from a local place that deals with composites and specialty fabrics.

Hey-u · « **Reply #16 on:** July 24, 2009, 03:54:37 PM »

Best one I have seen yet. Well done.

fiftytakedowns · « **Reply #17 on:** September 03, 2009, 09:07:53 PM »

Could you elaborate on bumping up the fuel pressure, and the mods you have on the rest of your system?

Thanks

bwawuz02 · « **Reply #18 on:** September 03, 2009, 09:20:36 PM »

Quote from: fiftytakedowns;77856

Could you elaborate on bumping up the fuel pressure, and the mods you have on the rest of your system?

Thanks

+1

I have a set of the 4-pintle injectors, going in the new engine. interested in your FPR setup.

New Engine specs: (have sourced all parts, hopefully going in next spring)
Post 9/92 M42 base
S50B30 10.8:1 pistons
138mm rods (PM for info, same as MM but WAY cheaper)
M44 Crank
VW lifters
MM single row t-chain (hopefully)
MM lightweight wrist pins
MM Main bearing upgrade
Deltacams regrind
M20 Flywheel/Clutch

Ramblin MAn · « **Reply #19 on:** September 11, 2009, 08:58:09 AM »

Is that your adjustable FPR in between the MAF and the PS resivior? And where did you get the lid to your oil filter? I like that billet look, but I am forced to deduct 3 points for not wiping it down before the picture :p

Oh ya...Intake kicks ass etc...

tony92ic · « **Reply #20 on:** September 16, 2009, 10:02:19 PM »

Just out of interest what was the temp and weather conditions when you had the throttle body icing problem?

1991 E30 M42 · « **Reply #21 on:** September 16, 2009, 10:55:38 PM »

It was below freezing on a spirited mountain drive, normally the intake would become heat soaked but there is a definite difference between cylinder head temp and intake manifold temp. Previously the only time I ever saw a manifold or throttle body ice up like that was on a blown alcohol powered dragster and on a turbo RX7 with a Webber DCOE45 carb, and in both of those cars they have wet manifolds not dry manifolds like our M42's and other port fuel injection cars.

Ramblin Man, that is an adjustable fpr and the oil filter cap is billet, its made by UUC, and i think they call it the oil center

Rich Dixon 91is · « **Reply #22 on:** July 20, 2010, 04:14:00 PM »

Quote from: 1991 E30 M42;64373

Its not changing the fuel, I ran several tests on the dyno with a data logger and if anything changed it was so small that I couldn't see it. I also played around with fuel pressure and found that 43 psi (3bar) was not optimal and picked up 10 horsepower and a falter curve by bumping it up to 50 psi.

Since you use a dyno, could you address this post: http://www.m42club.com/forums/showthread.php?t=9223&highlight=lightweight+flywheel

Particularly, bmwman91's absolute insistence that going to a high-flow air filter and cold air barrier offers no improvement over stock.

tjts1 · « **Reply #23 on:** July 20, 2010, 04:27:24 PM »

2009 called. It wants its thread back.

Vladi · « **Reply #24 on:** July 23, 2010, 02:06:41 AM »

Quote from: tjts1;94768

2009 called. It wants its thread back.

ha!