Anyway to lower the air intake/AFM?

[Jrey]

ive noticed a couple of E30s have their air intake/AFMs lowered, i want to do the same BUT, before i do, will i see any benefits of this and is it possible?

Example:



Mine:

[petrolhead]

Didn't you answer your own question with those pictures ? Some self-made looking bracket for the AFM......

BTW, a big KN filter bolted right to the meter is NOT the way I'd do things, on ANY car.

[Jrey]

Didn't you answer your own question with those pictures ? Some self-made looking bracket for the AFM......

BTW, a big KN filter bolted right to the meter is NOT the way I'd do things, on ANY car.

and whys that?

and it came like this when i received the car so i wouldnt know to be honest

[Sagaris]

You need a cone filter adapter with a smooth transition to the AFM like the trumpet shaped piece in the factory airbox. Without this transition you will lose power. You also want to keep the AFM close to the original angle (levelness) to prevent gravity effects on the afm flap. Obviously you want a heat shield too.

[petrolhead]

1) I don't think they do a very good job of filtering the air. Some say anything smaller than a cockroach goes right through aftermarket filters. I'm inclined to agree.
2) It sucks in hot air from the engine bay , mounted like that.
3) It'll fuck up the air flow meters signal in certain cases, with no pipe in between it and the filter (air mass meter in particular)
4) When used with an AMM , the oil or whatever sprayed on the filter will get to the AMM and fuck it up further.

[bmwguy325is]

The kits like above are junk. If you look at the factory intake box it has a velocity stack before the meter itself. So unless you replace that you lose power. Mostly torque on the bottom end. I had a kit I made myself. I measured the cubic area of the OE stack. Then made one out of thin exhaust pipe ad had a friend weld a flange on the end to bolt it to the AFM.

[jlevie]

Before the rules changed and required the stock air box the Spec E30 community tried lots of different things. I know of nothing that performed any better than the stock air box & filter. It just doesn't get any better than that!

[Jrey]

thanks for input, however im saving up for the KAMATORS Cold Air intake, seems to be good im sure someone from here had experience with this

http://www.ebay.com/itm/BMW-E30-E36-E32-E34-Version-4-Cold-Air-Intake-318i-325i-M3-CAI-Carbon-Fiber-/120806281288?_trksid=p4340.m185&_trkparms=algo%3DSIC.NPJS%26its%3DI%26itu%3DUA%26otn%3D5%26pmod%3D120789546076%26ps%3D63%26clkid%3D4014805025143782578#ht_1974wt_1270

[jlevie]

Go back and re-read what I said. All you will gain from a "cold air intake" is a different sound. And unless the CAI incorporates a boxed heat shield and snorkel you will loose a bit of performance.

[Jrey]

Go back and re-read what I said. All you will gain from a "cold air intake" is a different sound. And unless the CAI incorporates a boxed heat shield and snorkel you will loose a bit of performance.

i do understand what youre talking about, this product im referring HAS that same concept as the original box air filter, the filter its self is enclosed from the heat and it connects to the other end of where the box filter snorkels out

[jlevie]

That or something very similar is one of the intakes that we tried. The dyno said there was no advantage over the stock air box. In other words, a wast of money.

[petrolhead]

i do understand what youre talking about, this product im referring HAS that same concept as the original box air filter, the filter its self is enclosed from the heat and it connects to the other end of where the box filter snorkels out

Save your money. Seriously.

[kamotors]

Go back and re-read what I said. All you will gain from a "cold air intake" is a different sound. And unless the CAI incorporates a boxed heat shield and snorkel you will loose a bit of performance.

I will guarantee colder air with my intake kit as long as you duct it as intended. Those who believe the stock airbox cant be beat really need to some some testing of there own...

[nando]

the stock airbox works up to about ~180-190bhp. so unless you're making more than that - save your $$$.

[jlevie]

I will guarantee colder air with my intake kit as long as you duct it as intended. Those who believe the stock airbox cant be beat really need to some some testing of there own...

I've lost track of the number of dyno sessions I've done over the last four years. Early on I did do a number of runs with various CAI's looking for one that helped. Then the rules changed and I moved on to other Spec E30 legal tuning possibilities. There's an art to getting good data from a dyno session. For the results to be meaningful you need to make a number of runs in one session and play with one thing at a time. I generally spend about a half a day or a bit more at the dyno each time I go. Comparisons made in any one session are meaningful. If you dyno the car, then make a change and go to the dyno days or weeks later the comparison may not be valid.

So I've done the testing.