I'm gonna get cold air into this motor or else!
Thread Starter
Senior Member
Joined: 05-06-2008
Posts: 1,076
From: Over here
I did complete my original design for pulling cold air from what used to be the fog lights (both sides have inlets, but I was actually only plumbed on the passenger side... never got around to trying to plumb the driver side). It worked well, never had issues that several expressed concern about-- water, dirt, squirrels, etc., being sucked into the system.
I had some logged data comparing between stock inlet and my CAI setup. However, those logs were lost in the Great USB-Drive-Into-the-Toilet debacle of 2010. What the data showed was that _something_ was allowing faster spool-up, so the power came on faster. My belief is that I was providing cooler, more dense air, which provided a bigger payload to the motor.
I have since reverted to a stock air intake setup, and have been trying to build a larger airbox (to ensure I can feed it enough air at all times-- 750cfm). That project, like so many others, is not progressing very fast. However, my setup has much bigger issues at the moment-- GM "kwality" in the electrical system, some mysterious mechanical issue whereby the solenoids don't properly manage WG and BPV operation, and, of course, waiting for that to be figured out, tuning. It will still smoke a stock SS in my neighborhood, even while dumping boost just as the power comes on hard. But it would still be nice to see the other 60-80hp that's blowing out the WG
. I have been unable to find anyone in the area who has the knowledge to help solve these problems, and while there are several people who have always been very helpful, it's almost impossible to debug such problems over the Internet.
Senior Member
Joined: 09-20-2009
Posts: 1,058
From: Hayward, Ca.
As in one of my earlier post[w/pics.] I have been running a large hood scoop, cutout to dump loads of cool air ,over my airbox lid cutout, over the filter, for awhile now. No problems, no codes, and the big scoop is dimping lots of cool air under the hood, and into the filter area. Seems to be making a big difference, from stock setup. Only thing, it definately makes a loud sucking sound during boost, and the BOV is really loud now. You can hear it a block away. "Moon"
Senior Member
Joined: 05-13-2008
Posts: 2,075
From: Knoxville, TN
XXL, Welcome Back!
You say your bleeding boost? or is it deliberately dumping it? Only at the drag strip, do I notice a huge dump, and a sharp "tweet". This only occurs to me after leaving the water box, tires spinning away, then instant grip. since we have a by-pass took me by suprise first time I heard it.
You say your bleeding boost? or is it deliberately dumping it? Only at the drag strip, do I notice a huge dump, and a sharp "tweet". This only occurs to me after leaving the water box, tires spinning away, then instant grip. since we have a by-pass took me by suprise first time I heard it.
Senior Member
Joined: 04-03-2009
Posts: 707
From: atlanta, ga
As in one of my earlier post[w/pics.] I have been running a large hood scoop, cutout to dump loads of cool air ,over my airbox lid cutout, over the filter, for awhile now. No problems, no codes, and the big scoop is dimping lots of cool air under the hood, and into the filter area. Seems to be making a big difference, from stock setup. Only thing, it definately makes a loud sucking sound during boost, and the BOV is really loud now. You can hear it a block away. "Moon"
Senior Member
Joined: 06-21-2008
Posts: 433
From: Lancaster, Ca.
Try driving through the mountains.
On my cross country road trip, with the cruise set @ 80mph, going up and down those mountains was really noisy. The downhills were the worse. When ever the boost got down to @ 8-10 in Hg (on the vacuum side) the BOV would open up and you would get what a lot of the people in this forum have reported as that clunking noise from the turbo. It feels like an Auto Tranny downshifting. Got used to it after about 10 times though. Then on the up hills the boost would climb to @ 10 psi. This without even touching the gas pedal.
But seriously, why the need for a CAI on a Turbo? You're just wasting gas for that momentary thrill of acceleration and shortening the life of the turbo. Not a practical mod for street use. Just my two cents.
But seriously, why the need for a CAI on a Turbo? You're just wasting gas for that momentary thrill of acceleration and shortening the life of the turbo. Not a practical mod for street use. Just my two cents.
Senior Member
Joined: 03-11-2009
Posts: 327
From: WI
just use methyl injection when you want the power, flip on a switch.
- No cutting, alterations or creating of exotic pieces for some uncontrolled cold air.
- Methyl increases your gas octane.
- Methyl lowers your cold air charge temps after the blower....much better than hoping those cold air temps help once heat soak is in place.
- Use a three nozzle system, you can cool your blower itself, extending its life and lower the air charge temps.
Get a decent system.......such as http://www.alcoholinjectionsystems.c...duct_info.html
- No cutting, alterations or creating of exotic pieces for some uncontrolled cold air.
- Methyl increases your gas octane.
- Methyl lowers your cold air charge temps after the blower....much better than hoping those cold air temps help once heat soak is in place.
- Use a three nozzle system, you can cool your blower itself, extending its life and lower the air charge temps.
Get a decent system.......such as http://www.alcoholinjectionsystems.c...duct_info.html
Last edited by JeramieJJ; Sep 8, 2011 at 07:13 PM.