fwi intake issues - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 07-14-2011, 03:14 PM   #11
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

never worked on a */c engine but the evap purge has to go to the throttle body somewhere, maybe that vac line is leaking air
jwfirebird is offline   Reply With Quote
Old 07-14-2011, 03:28 PM   #12
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

I think I see your problem, your air intake is very hot. That should be about 10* above air temp or so. When you put the FWI in did you install that IAT sensor in the intake or is it laying inside the engne compartment? It is very important that the PCM knws the temp of the air before it gets to the MAF, or is will set up the AFR wrong.
Danthurs is offline   Reply With Quote
Old 07-14-2011, 05:11 PM   #13
Senior Member
Posts like a 4 Banger
Thread Starter
 
swampthing's Avatar
 
Join Date: May 2008
Location: Homosassa, Florida (yes it says Homo)
Posts: 115
Thanks: 0
Thanked 0 Times in 0 Posts
swampthing is on a distinguished road
Default

The IAT is installed correctly. That temp was after sitting in park with no movement for about 20-30 minutes
swampthing is offline   Reply With Quote
Old 07-14-2011, 06:13 PM   #14
Senior Member
Posts like a Corvette
 
Nighthwk12's Avatar
 
Join Date: Feb 2009
Location: Jersey Shore
Posts: 1,511
Thanks: 0
Thanked 0 Times in 0 Posts
Nighthwk12 is on a distinguished road
Default

You're IAT shouldn't be cracked like that still. Hottest I've seen mine is at the track on a 80* day 10 passes, stock box. The temp was 102*
Nighthwk12 is offline   Reply With Quote
Old 07-14-2011, 09:38 PM   #15
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Installing a FWI should not effect your mileage. If it has, then something else has changed. Check all the vacuum lines.
Danthurs is offline   Reply With Quote
Old 07-14-2011, 11:59 PM   #16
Senior Member
Posts like a 4 Banger
Thread Starter
 
swampthing's Avatar
 
Join Date: May 2008
Location: Homosassa, Florida (yes it says Homo)
Posts: 115
Thanks: 0
Thanked 0 Times in 0 Posts
swampthing is on a distinguished road
Default

Car will be under going lots of detailed investigation over the next few weeks. I have one theory that seems plausible at this point. The fuel pump was changed a few years ago before I knew very much about these cars. I bought the advance auto airtex pump which has always been noisy. Since the car never has a code and the problem came with the intake I imagine that crappy pump can't keep up with the extra air.

So can anyone tell me the specs of the fuel pressure? What should it be at key on, idle and under load?
swampthing is offline   Reply With Quote
Old 07-15-2011, 12:03 AM   #17
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

About 48psi
Danthurs is offline   Reply With Quote
Old 07-15-2011, 12:09 AM   #18
Senior Member
Posts like a 4 Banger
Thread Starter
 
swampthing's Avatar
 
Join Date: May 2008
Location: Homosassa, Florida (yes it says Homo)
Posts: 115
Thanks: 0
Thanked 0 Times in 0 Posts
swampthing is on a distinguished road
Default

Ok I will see about renting/buying one and enough hose to reach the drivers seat. I will update when I get some readings
swampthing is offline   Reply With Quote
Old 07-15-2011, 01:10 AM   #19
Senior Member
Posts like a Corvette
 
Nighthwk12's Avatar
 
Join Date: Feb 2009
Location: Jersey Shore
Posts: 1,511
Thanks: 0
Thanked 0 Times in 0 Posts
Nighthwk12 is on a distinguished road
Default

Maybe you cracked you egr tube installing the intake?
Nighthwk12 is offline   Reply With Quote
Old 07-15-2011, 11:02 AM   #20
Senior Member
Posts like a Supercharger
 
gonzo4191's Avatar
 
Join Date: Jul 2007
Location: LZ, IL
Posts: 164
Thanks: 0
Thanked 0 Times in 0 Posts
gonzo4191 is on a distinguished road
Default

this sure is a funny one, ive never had a problem installing a FWI, do you have a picture of your engine bay with it in?
gonzo4191 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Intense FWI or "ricer" intake? freaktweeker420 Performance, Brainstorming & Tuning 6 09-01-2007 12:16 AM
Intense FWI intake question ptrfair Performance, Brainstorming & Tuning 12 04-20-2007 12:58 AM
Dorman Upper Intake Manifold Issues ***MUST READ*** pontiacjeff General GM Chat 6 03-14-2006 12:23 PM
intake fixed...no more "issues"...except check eng LittleHoov 1992-1999 14 07-09-2005 10:56 AM
Rice pipe w/ heat sheild (CAI) vs. Fender well intake (FWI) 19bonne93 Performance, Brainstorming & Tuning 20 12-02-2004 01:10 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:54 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.