increase throttle response

[mrl390]

You may in fact be wrong my friend unless you can show us something different.

There is likely "negative air" in those locations.

Our cars are designed to cheat the air for fuel mileage, and you may have huge areas of negative or at best compromised air flow in the frontal area of the car.

There is air flow for the stock air box but it is limited to that factor alone.

Well what do you suggest then since I and the hundreds if not thousands of people who use a FWI in these cars are wrong and you are right.

[robertisaar]

Well what do you suggest then since I and the hundreds if not thousands of people who use a FWI in these cars are wrong and you are right.

easiest thing to do: find the highest pressure area generated from aerodynamic drag. back in the day when cowl hoods were functional, that was great because the windshield stopped a lot of air, basically generating pressure, which the engine took in and made more power because of it.

finding the exact point in a modern car is tougher due to trying to route the intake tubes so that you don't lose flow. heres a suggestion even though its not ideal. you mentioned the air dam, suck air from there, make a larger plate to "stop" even more air, that way it keeps piling on as you go faster. eventually if you make it too big, the aerodynamic drag will cancel any benefit you create.

[timg]

I've had fenderwell intakes and underhood intakes. The fenderwell always outperformed the short ram under the hood intake.

Tim

[mrl390]

I've had fenderwell intakes and underhood intakes. The fenderwell always outperformed the short ram under the hood intake.

Tim

Agreed. While I was making my FWI I had the filter attached to the MAF and it was sitting right in the bottom of the original air box. It was only good for sound, it didnt really perform any better. When I put the actual FWI in, it definately made a difference. It pulls harder down low and it really screams when you downshift while moving.

[asylummotorsports]

Hey I'm not here to argue just suggest what works for me.

And I think having a 14.0/99 mph 3500 Beretta with more money in it than I'm willing to concede makes it somewhat relevant.

I removed my CAI, went back to the 12" "short ram" and the car ran a full 1/10 and a half quicker!

As I have stated, IF you can find positive air, then great.

In the meantime I will let my time slips speak for themselves.

All those bends, and the questionable placement do have a negative affect on these cars.

have fun and do what you like.

Just relating my experience, and I have ALOT of runs on this car.

[IsaacHayes]

Asylum, I bet if you drove that in hot traffic you'd feel the loss in power a lot more than just running down the 1/4 mile. The throttle response for one goes out the window with my car with a WAI. Plus the lumina's/etc have a lot different fender setup than our cars.

[asylummotorsports]

You may be right but I can only relate the experience with my car, and admittedly it is a pretty one dimensional car.

I only drive it back and forth to the track, and even that is 99% highway.

But I DID notice a substantial improvement.

All those bends really do affect air flow.

Ask any H/VAC specialist!

[WrathOfSocrus]

He also has a W body which I would assume has a slightly different fender than a J or L body. I see everyone say 'these' cars but when it comes to a 60 degree it isn't always the same car body.

[robertisaar]

largely similar, especially the early 90s, almost exact same fender for cavalier/beretta/lumina.

[IsaacHayes]

Routing though is more or less a straight shot with the W body. The beretta the CAI will snake around the battery and then into the 3" hole in the fender pointing at the ground.

[1988GTU]

The DOHC has 4 cams and I'd wager that the 3" or better diameter FW/CAI are very beneficial from guesstimateology.
All we really need for this discussion pertaining to the LQ1 are three things.
Someone to log the pcm/ecu for IAT's from DD and Track use
Few dyno pulls (heat soaked and cold runs)
Complete 1320' timeslips.

[xtacyZ34]

Agreed. While I was making my FWI I had the filter attached to the MAF and it was sitting right in the bottom of the original air box. It was only good for sound, it didnt really perform any better. When I put the actual FWI in, it definately made a difference. It pulls harder down low and it really screams when you downshift while moving.

you wouldnt have your plans/layout of your FWI so i could build one off it?

[mrl390]

Everything you need to know is posted here:

http://www.montecarloforum.com/forum/showthread.php?p=137517#post137517

[no_doz]

cai's are nice, but the first time u dip that cheapo ebay CAI in a puddle enjoy watching your engine die... i had this happen in a honda of mine while i had no battery & was trying to get to the zone to get a new battery while running a jumper pack as my batt, & i ran it dead trying to restart the car...in the middle of traffic....with no flashers because the pack was dead....ahhh good times :P

[mrl390]

Water really isnt an issue with the short ram intakes or the FWIs on these cars. The filter for my intake is up in the fender enough to keep water away from it. I have driven in some heavy rain with it and it doesnt even get wet anywhere near the filter.