LSD for AutoX

[nando]

I am currently running the miller with the stock box and a K&N drop in filter and the difference is huge. most of the difference does not come form the intake setup but by getting rid of the restrictive AFM design.

most of it came from tuning as I said. The benefits of the MAF are mostly in transient response and smoothness. The flow gains from removing the AFM are pretty small on a stock motor, less than 5hp.

[call me jack]

LSD will help, quit a bit, but you'll need to be more precise with your throttle input, or your really going to be sliding.

[CrazyB]

I am currently running the miller with the stock box and a K&N drop in filter and the difference is huge. most of the difference does not come form the intake setup but by getting rid of the restrictive AFM design.

[nando]

so no comment on denser air making more power because "it burns faster?" ;)

the stock airbox and AFM are *just the right size* for the stock motor. Do think BMW engineers are retarded, and they didn't realize just making a bigger hole would give the engine more power with no other drawbacks?

So you've made the airbox and AFM less restrictive, what about the throttle body, intake manifold, head, cam, and exhaust? These things are all designed together. Peice meal upgrades are a waste of time, which is why swaps are so popular.

and I wasn't arguing against a MAF. Also gains with the MAF include tuning, which is where most of that power is coming from.

what is far from stock btw?

[F34R]

LOL. seriously? Go back and think about that one for a second, and why denser air actually makes more power.

I've done my homework on intakes, I'm not saying don't do one. But on a 100% stock motor it's a waste of time for the most part. You need to be making ~30-50hp more power than stock for a larger filter to make a significant difference (more than a couple whp). And it's the larger surface area, not some magic "cold air" bullshit that makes a difference.

Never stated on a stock motor. My m20 is far from stock.

Also the stock box has a small hole to suck in and then a box and a barn door to pass through. I know for a fact that the miller MAF is better in every way then stock. I am not saying a cone and a tube to the fender makes worlds of difference. But I would take it over the stock BMW box any day. I am sure you would also.

For anyone wondering the benefits of the MAF:

http://www.millerperformancecars.com...sion-faqs.html

[u3b3rg33k]

I went from an OEM LSD to a Z3 torsen. It's so much better at getting the power down than the salsbury I'll never go back to clutches.

I don't auto-x to win (it'd be nice if I did, but I won't), but from running with an LSD last year and a torsen this year, the difference is audible. I hear less inside tire noise. It's also more useful on snow, ice and dirt (rally-x), when it's harder to find grip in the first place.

[nando]

It matters when you put it in a fender. Instead of hot engine air you are getting fresh colder air. That matters 100% If you don't think so then you don't know how air to fuel ratios work.

LOL!!! You're trying to talk down to me about how "AFR works"?

the stock airbox already sucks "cold air" from behind the grill, so what do you think you are gaining? You're getting ambient air either way, there's no magic "cold air" source. The only way it would be hot air would be an unshielded filter. The stock paper filter has more than enough surface area to feed the stock engine as well.

It's not going to "increase throttle response" any way you put it. Motronic has zero AE, so it will go lean on throttle tip in no matter what is in front of the throttle. Actually, more air may make this worse. A MAF can help because it measures air mass directly and responds very fast compared to an AFM.

Cold air is denser than warm air and holds slightly more O2.

Thank you einstein. I'm not new to teh internets.

Therefore combusts at a higher rate.

LOL. seriously? Go back and think about that one for a second, and why denser air actually makes more power.

I've done my homework on intakes, I'm not saying don't do one. But on a 100% stock motor it's a waste of time for the most part. You need to be making ~30-50hp more power than stock for a larger filter to make a significant difference (more than a couple whp). And it's the larger surface area, not some magic "cold air" bullshit that makes a difference.

[F34R]

an intake does not increase throttle response. LOL. if you have an early motronic 1.0-1.3 powered car, the only thing that's going to increase throttle response is aftermarket engine management or a system like Millers.

and if your engine is 100% stock (a chip doesn't count), an intake isn't going to do anything but sound cool.

It matters when you put it in a fender. Instead of hot engine air you are getting fresh colder air. That matters 100% If you don't think so then you don't know how air to fuel ratios work.

Cold air is denser than warm air and holds slightly more O2. Therefore combusts at a higher rate.

So back to sway bars, any idea on the option 22 vs 25mm for the front, just not sure which one to get and price is same.

You can use lots of brands to get what you re looking for. A simple bushing upgrade will do WONDERS because of the OEM worn ones. You can buy the TMS complete kit for about the same price as the BW front 25mm alone. I went the TMS setup and love it. But remember that once you upgrade parts you move up in classes.

You can get a booklet and look over what you can do and stay in the correct power/mod class. I have mine gutted and getting an m50tu swap with a good amount of goodies. I will not be the fastest in my class, but I race MY times and go there for fun.

You can even use cabby front sway, so I have read. I forget the size, I think it is 22mm? In the end the TMS swap in 3mm smaller and you get LOTS more with the kit.

(TMS brand)
http://www.turnermotorsport.com/html...0&subcat_id=68

(25mm BW brand)

http://store.bimmerworld.com/e30-25mm-tubular-front-swaybar-p592.aspx

[CrazyB]

So back to sway bars, any idea on the option 22 vs 25mm for the front, just not sure which one to get and price is same.

[nando]

an intake does not increase throttle response. LOL. if you have an early motronic 1.0-1.3 powered car, the only thing that's going to increase throttle response is aftermarket engine management or a system like Millers.

and if your engine is 100% stock (a chip doesn't count), an intake isn't going to do anything but sound cool.

[F34R]

a real cold air intake actually improves throttle response so thats still relavent.

Indeed it does! plus it sounds cool!

You gave some decent advice until you mentioned an intake.

It is cheap and easy, I cut a hole in my fire wall and ran it out side so it does not suck in hot air. Also it was last on the list. :D

Intake and throttle response is for sure not an issue now that I am running the miller maf love the setup.

Miller makes great shit! Now do the other stuff and you will lay down awesome times! Well...the car will, that part is all on you!

[CrazyB]

Intake and throttle response is for sure not an issue now that I am running the miller maf love the setup.

[xwill112x]

In the E30's case, you will likely find that the best cold air intake is the stock one.

in most cases yes. removal of the highbeam, and moving the filter right there in the hole would allow a gain. but there are better mods formore performance for the money.

[Wh33lhop]

In the E30's case, you will likely find that the best cold air intake is the stock one.

[xwill112x]

a real cold air intake actually improves throttle response so thats still relavent.