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Old 01-03-2004, 03:34 PM   #16
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Quote:
Originally posted by EMPOWERD
Whatever you do, DO NOT get a K&N cone filter. It's been proven many, many times that the cone filter only sucks hot air in from the engine bay. Dyno results have proven time&time again that the best filter is a K&N drop-in type with the stock airbox.
Randy thats exactly what i needed to hear! I have the K/N drop in in my stock airbox and people are constantly telling me to go cone, but now i see they were wrong!!!
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Old 01-03-2004, 05:23 PM   #17
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Quote:
Originally posted by EMPOWERD

Whatever you do, DO NOT get a K&N cone filter. It's been proven many, many times that the cone filter only sucks hot air in from the engine bay. Dyno results have proven time&time again that the best filter is a K&N drop-in type with the stock airbox.
Hey Randy,

I'm not saying your wrong, but when you dyno your car the car isn't moving, therefore the cone intake would suck in more hot air. While the airbox doesn't have a fresh source of air either, it is well protected from the rest of the engine bay's heat. However, when the car is moving, there is a fresh source of air and therefore would be difficult to tell which intake setup works better. The point of a cone intake is to be more free flowing and less restrictive while the car is moving. There is no doubt that the stock air box works better in heavy traffic conditions and basically any non highway driving. But on a race track, wouldn't the cone filter work better?

I've tried both setups. Infact I sold my drop-in filter to Terry. The cone filter felt slightly better, yet I could have just been distracted by the sound it made and thought my car was pulling harder when in fact it wasn't. When I tested them both in 30 degree celcius weather, no doubt the airbox w/ the drop-in filter worked much better. With the cone filter the car was torquless and bogged when trying to go from stop. However, if the temperature outside is just perfect, cool and low humidity, you really "feel" the car pull harder on those cool nights with the cone filter.

I'm not disagreeing with you. This is just a great topic to discuss for anyone who wishes to mod their cars for street or track.

Bryan
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Last edited by Autotechnica; 01-03-2004 at 05:37 PM.
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Old 01-03-2004, 06:06 PM   #18
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Good point Bryan. The dyno tests that I mentioned where performed by my friend Sean with a '96 318ti on a dyno with a massive fan infront of the engine (if that matters). An E36 chassis has the option of using a heat sheild around the cone filter sealing up to the hood isolating it from the rest of the compartment. I think the best setup would be a true cold air system like Carbonio, but E30's don''t really have that option unless you go crazy with a sawzall and reloate the ABS system too. I custom made a heat sheild and had a ram-air snorkel right to the high-beam location which helped a bit, but I was weary about driving in the rain.
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Old 01-03-2004, 06:17 PM   #19
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Quote:
Originally posted by EMPOWERD
Good point Bryan. The dyno tests that I mentioned where performed by my friend Sean with a '96 318ti on a dyno with a massive fan infront of the engine (if that matters). An E36 chassis has the option of using a heat sheild around the cone filter sealing up to the hood isolating it from the rest of the compartment. I think the best setup would be a true cold air system like Carbonio, but E30's don''t really have that option unless you go crazy with a sawzall and reloate the ABS system too. I custom made a heat sheild and had a ram-air snorkel right to the high-beam location which helped a bit, but I was weary about driving in the rain.
which airbox will fit under the hood of an e30 w/ s50 ?
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Old 01-03-2004, 06:22 PM   #20
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Originally posted by jeremy
which airbox will fit under the hood of an e30 w/ s50 ?
Bull nose hood with two K&N sticking out like red boogers
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Old 01-03-2004, 06:23 PM   #21
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Originally posted by Slowered318
Bull nose hood with two K&N sticking out like red boogers
done and done
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Old 01-05-2004, 09:17 PM   #22
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Weight reduction is definitely the way to go for the M42. I just pulled out the stock seats today and they weigh a tonne, it felt like at least 50-60lbs each!! I replaced them with Corbeau Forza seats which weigh significantly less, only 10-15lbs each max. The car pulls so much harder and the suspension felt much stiffer giving the car overall better handling. I lightened the car at least by 80lbs today which immediately could be noticed.

Put it this way. The 318 motor isn't such a bad motor; it's just underpowered for such a heavy car. Once you start to get the weight down, it really is a fantastic car to drive.

Weight reduction all the way!

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Old 01-09-2004, 01:20 AM   #23
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Here's something that hasn't been posted yet. Switch out the (15 amp brown) fuel delivery fuse (9) in your fuse box for a higher rated one.

NOTE: This is a little dangerous. Bentley Service Manual for the E30 BMWs reports that swapping a smaller fuse for a larger one could result in fire.

But, when I bought my car it had the yellow 25 amp fuse already in it, which I later swapped out for the 15 blue because that's what the Bentley manual states it is suppose to be. After feeling a lack of power and acceleration I swapped the 15 for 25 on Sunday and the throttle feels more responsesive.

I'm not sure if this does anything bad to the electrical sys., but I have noticed a slight change in fule economy. My car is an '84 and yours is a '90 so the fuses may differ.
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Old 01-09-2004, 02:05 AM   #24
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Even though we didn't really race properly from a stand still, I seem to remember pulling ahead of you nonetheless

Sounds like a rematch is in order.

Bry
From a standstill he should be kicking your ass stock for stock anyways. He has literally hundreds of pounds on you. If you pull on him at all it's a sign of solid power gains.
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Old 01-09-2004, 03:45 AM   #25
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Quote:
Originally posted by BladeRunner
Here's something that hasn't been posted yet. Switch out the (15 amp brown) fuel delivery fuse (9) in your fuse box for a higher rated one.

NOTE: This is a little dangerous. Bentley Service Manual for the E30 BMWs reports that swapping a smaller fuse for a larger one could result in fire.

But, when I bought my car it had the yellow 25 amp fuse already in it, which I later swapped out for the 15 blue because that's what the Bentley manual states it is suppose to be. After feeling a lack of power and acceleration I swapped the 15 for 25 on Sunday and the throttle feels more responsesive.

I'm not sure if this does anything bad to the electrical sys., but I have noticed a slight change in fule economy. My car is an '84 and yours is a '90 so the fuses may differ.
anyone can confirm this?

I might do it if it gives more power

BladeRunner: About the fuel economy, is it better or worst? Any problem cause by the mod yet?
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Old 01-09-2004, 03:50 AM   #26
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ADD: any MODERATOR can make this thread sticky, please? I'm sure most of 318's owner will find it usefull
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Old 01-09-2004, 05:46 AM   #27
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Here's some very useful information in a thread we started on Bimmerforums. It's all about the modified M42 AKA the BTCC race S42 motor.

http://www.bimmerforums.com/forum/sh...5&pagenumber=1

You should find it very useful...

Bryan
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Old 01-09-2004, 09:19 AM   #28
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Quote:
Originally posted by EMPOWERD


Whatever you do, DO NOT get a K&N cone filter. It's been proven many, many times that the cone filter only sucks hot air in from the engine bay. Dyno results have proven time&time again that the best filter is a K&N drop-in type with the stock airbox.
hmmm I got heat shield, and it works.
we compared temperature (by touching ) on my car vs openwheels car (no heat shield) and what a difference.
and c'mon the sound of the intake is just amazing
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Old 01-09-2004, 02:12 PM   #29
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BladeRunner: About the fuel economy, is it better or worst? Any problem cause by the mod yet?

----

I shall fill her up today and see if there is any change in fuel economy. Useually within a week to week+half I'm at 1/4 tank. So I'll see.
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Old 01-09-2004, 02:15 PM   #30
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I would reckon and change in fuel dilvery would decrease fuel economy, but don't hold me to that. I've always said the stock fuel pressure/delivery was poor, especially under hard acceleration my car (5 speed manual trans.) would accel. bog, accel. bog, accel. bog, then revvvvvvv off we go into what evers next usually 3rd.
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