Prelude filter mod for DASC

[DustenT]

After a lengthy discussion on 318ti.net, I bought a Honda Prelude filter for my DASC to replace the K&N. Everyone knows the K&Ns don't filter very well, paper filters are much better for filtration.

It's a Napa Gold filter, with Napa part number: 6277.

I needed to drill a hole for the intake temp sensor (1/2" diameter). Pics here: http://180customs.net/v-web/gallery/Paperfilter

[ClubSport]

Good idea. What is the inside diameter of the prelude filter's tube?

[DustenT]

Good idea. What is the inside diameter of the prelude filter's tube?

Almost the same diameter as the outside of the MAF. I used one strip of electrical tape around the outside of the MAF to make it super tight, then used a hose clamp to snug it down.

[FATHER]

Also i think you can use the stock filter box with a K&N replacement filter for the TI

[drrty byl]

looks cool.. what made you decide to go for that particular filter? do you have anything connected to that front inlet that the box normally connects to? does your filter rest/mount on something or is it pretty stable just sitting there?

[DustenT]

looks cool.. what made you decide to go for that particular filter? do you have anything connected to that front inlet that the box normally connects to? does your filter rest/mount on something or is it pretty stable just sitting there?

Someone on the Yahoo list suggested this filter. The K&N filters have been getting really poor reviews compared to OEM paper filter, and this filter will flow more than enough for this application. I don't have the factory filter box, I don't think it fits with the supercharger (although it could with some modification I'm sure). The filter is very light, so it doesn't need any additional support.

[drrty byl]

nice. did you cover up the front inlet connection that the stock box connects to? i'm wondering if other people with aftermarket/non-box intake setups run anything to this hole, leave it open and uncovered, or place a cap or something on it? did you fog your box before installing the dasc?

[DustenT]

nice. did you cover up the front inlet connection that the stock box connects to? i'm wondering if other people with aftermarket/non-box intake setups run anything to this hole, leave it open and uncovered, or place a cap or something on it? did you fog your box before installing the dasc?

You don't need to cover that hole. Yes, I had the airbox fogged for about 2 weeks, then decided I needed a supercharger.

[drrty byl]

I remember reading some very negative information about going with an aftermarket intake as opposed to just running the stock box/fogging it - the filter possibly sucking in hot engine air?.. I've had no problems with my non-box filter for about 2 years now

[DustenT]

I remember reading some very negative information about going with an aftermarket intake as opposed to just running the stock box/fogging it - the filter possibly sucking in hot engine air?.. I've had no problems with my non-box filter for about 2 years now

You realize that I have a supercharger right? Sucking in cold air is less of an issue of supercharged cars because the blower produces so much heat anyways. The gains are minimal, and I like being able to SEE my filter all the time.

On a N/A engine, the stock airbox and filter is fine. If you need to modify it, fogg it.

[ClubSport]

Could you take some measurements of the filter? Length, dia, tube dia? I have an M42 so I have the AFM, and I don't know how that size compares to your MAF.

Thanks!

[tastade]

Is there any update to this? Will this work with the M42 for the 95ti? Thanks! Eric

[m3outtanowhere]

Another good filter is FRAM for a 1999 FORD ESCORT...same filter but its orange.

[DustenT]

Is there any update to this? Will this work with the M42 for the 95ti? Thanks! Eric

What kind of update are you looking for? If you have the Downing Atlanta Supercharger, I'm sure this will work on the m42. If it doesn't, you're only out $15. Give it a try and post your results.

[tastade]

Will do, I don't have the DASC yet but was looking at getting one. So I was trying to find the best intake and exhaust to go along with it. I just checked my compression and it was about 155 psi on all 4 cylinders (+/- 1 psi), so that got me excited.

BTW I used to have the 91 prelude, and that filter does look familiar. I was shocked when I changed the filter to find that it came with the large circular filter stock.

[Mad-Machine]

You realize that I have a supercharger right? Sucking in cold air is less of an issue of supercharged cars because the blower produces so much heat anyways. The gains are minimal, and I like being able to SEE my filter all the time.


See, I have a problem with that argument. For argument's sake, let's say that the DASC boosts the intake temp up another 50 degrees above ambient...

if the engine compartment is 100 degrees, then the engine is sucking in 150 degree air.

However, if you can get the intake to suck slightly cooler air from outside the engine bay.. say it is only 90 degrees outside. Then the engine is only ingesting 140 degree air. It could be the difference between a lot of power and having the timing pulled back by the knock sensor.

I realise that is a very simplified argument. A compressor is never going to add the same amount of heat all the time. It depends on how much boost it is making, Engine RPMs, and engine load.. but it does serve to make a point.

[DustenT]

See, I have a problem with that argument. For argument's sake, let's say that the DASC boosts the intake temp up another 50 degrees above ambient...

if the engine compartment is 100 degrees, then the engine is sucking in 150 degree air.

However, if you can get the intake to suck slightly cooler air from outside the engine bay.. say it is only 90 degrees outside. Then the engine is only ingesting 140 degree air. It could be the difference between a lot of power and having the timing pulled back by the knock sensor.

I realise that is a very simplified argument. A compressor is never going to add the same amount of heat all the time. It depends on how much boost it is making, Engine RPMs, and engine load.. but it does serve to make a point.

Then I guess it comes down to personal preference and risk assessment. I have a $3500 part directly after my air filter. Do I want to risk the filter getting damaged? If the filter is in the bumper, how do I see if it's damaged? If any kind of dirt or contamination gets into the supercharger it's going to do hella damage to it. I'd perfer to lose a *small* amount of power if it means that I can see my filter everytime I open the hood.

Please keep in mind that I don't just make this stuff up. I had a cold air intake on my car for a long time. When I switched to the Prelude filter it made almost no difference at all. Your argument may be accurate in theory, but in the real world the difference is so small you'll never notice.

Here is a picture of my car with the cold air intake in place. Notice how you can't see the filter:
http://180customs.net/v-web/gallery/albums/BMW/Random_009.sized.jpg

[tastade]

By the looks of the photo the filter is far enough away from the engine. It is in the drivers corner at the front of the car that is largely fed by cool air. If a person insisted on making it only for a cold air intake, they could box around the prelude filter so the hot air from the engine cant make it to the filter.

[DustenT]

By the looks of the photo the filter is far enough away from the engine. It is in the drivers corner at the front of the car that is largely fed by cool air. If a person insisted on making it only for a cold air intake, they could box around the prelude filter so the hot air from the engine cant make it to the filter.

Technique Tuning's Stage 3 software comes with a box to block out warm air. I trust that if there was a significant amount of power to be gained from running a cold air intake, NickG's would have included it was his stage 1, 2, and 3 kits. Picture of the Stage 3 intake setup:
http://318ti.org/notebook/dasc/installed-pics/005-DASC_Drivers.jpg

[pdxmotorhead]

After a lengthy discussion on 318ti.net, I bought a Honda Prelude filter for my DASC to replace the K&N. Everyone knows the K&Ns don't filter very well, paper filters are much better for filtration.

It's a Napa Gold filter, with Napa part number: 6277.

I needed to drill a hole for the intake temp sensor (1/2" diameter). Pics here: http://180customs.net/v-web/gallery/Paperfilter

You are hereby to consider yourself virtually backhanded for draggin up the K&N thing again :icon_poke
For every testimonial for or against the K&N there is an oposite one.

My personel one?
5 vehicles all with 200K plus miles on them and not a single sign of undue wear on one of them. ALL ran K&N for 90% of their lives or more.

Dave :)

[DustenT]

You are hereby to consider yourself virtually backhanded for draggin up the K&N thing again :icon_poke
Dave :)

It's a touchy subject, and I think on MOST vehicles it doesn't matter. But.....when I had my supercharger rebuilt the guy called me and said "did you have a filter on this thing?". I ran the K&N that came with the DASC and properly maintained it. The only thing difference between my setup and 10-30 other setups is my CAI. Therefore....no K&N for me and no CAI.

[pdxmotorhead]

Were you oiling the filter every oil change? Just curious, most people miss that in the instructions. You don't have to clean it every change, but it needs fresh oil every 6K miles at least.

Dave

[DustenT]

Were you oiling the filter every oil change? Just curious, most people miss that in the instructions. You don't have to clean it every change, but it needs fresh oil every 6K miles at least.

Dave

I followed the instructions for the K&N to the T.

Not to say that anyone else will experience the same problems I did. I just wanted to share my thoughts and experience.

[Mad-Machine]

see, I happen to like those "filter boxes" that they sell to allow the 6 cylinder bimmers to have a short ram intake that still pulls cold air from under the car. I may have to buy one and modify it to work with the 4

[lilflip]

Will do, I don't have the DASC yet but was looking at getting one. So I was trying to find the best intake and exhaust to go along with it. I just checked my compression and it was about 155 psi on all 4 cylinders (+/- 1 psi), so that got me excited.

BTW I used to have the 91 prelude, and that filter does look familiar. I was shocked when I changed the filter to find that it came with the large circular filter stock.

lets do another group buy if the other guys gb goes good...i want one...now.. also prolly gonna get a new lsd

[inlacal]

I followed the instructions for the K&N to the T.

Not to say that anyone else will experience the same problems I did. I just wanted to share my thoughts and experience.

DustenT: I missed the problems you are alleging? What were they? I got my DASC today and while I haven't installed it, I didn't even know it came with a K&N filter. I was fully prepared to use the stock airbox setup. I'm guessing that that isn't a possibility?

Please advise,
Chris

[DustenT]

DustenT: I missed the problems you are alleging? What were they? I got my DASC today and while I haven't installed it, I didn't even know it came with a K&N filter. I was fully prepared to use the stock airbox setup. I'm guessing that that isn't a possibility?

Please advise,
Chris

I've heard the stock airbox can be used, with some fabrication work.

[HuGo]

DustenT: I missed the problems you are alleging? What were they? I got my DASC today and while I haven't installed it, I didn't even know it came with a K&N filter. I was fully prepared to use the stock airbox setup. I'm guessing that that isn't a possibility?

Please advise,
Chris

Open your box!

Dusten, do i just go to autozone and ask for a paper filter for a 91 honda prelude? Then just make the hole for the sensor? Every how many miles does the filter need changing? Cuz the filter on my CAI is rewashable. Maybe ill just take off the CAI and use the filter. Maybe ill keep both. Not Sure yet.