Halltech Stinger LTFT Issues
Thread Starter
Drifting
Joined: Jan 2005
Posts: 1,419
Likes: 16
From: Oceanside, CA
Halltech Stinger LTFT Issues
With Halltech stinger intake my LTFT's are acting silly. I've gone through all the connections repeatedly, taken it off, gone back to stock, even put on a 01 Z06 maf with a screen.
This is what's happening: LTFT's are around +13 at idle with the hood open. Close the hood, they go to near +20. Went for a ride today, got home hooked up EFI Live and start logging with hood closed, LTFT's at +20/21, open the hood and it goes down to +13/14, close the hood again and they shoot back up to +21. What the he!! is going on. Spend money on an intake that I can't even use. I hear that a 01 Maf will help, spend money on that and I still can't use the damn intake. Help!
This is what's happening: LTFT's are around +13 at idle with the hood open. Close the hood, they go to near +20. Went for a ride today, got home hooked up EFI Live and start logging with hood closed, LTFT's at +20/21, open the hood and it goes down to +13/14, close the hood again and they shoot back up to +21. What the he!! is going on. Spend money on an intake that I can't even use. I hear that a 01 Maf will help, spend money on that and I still can't use the damn intake. Help!
Pro
Joined: Apr 2004
Posts: 565
Likes: 0
From: St. Louis MO
I am experiencing a very similar problem with mine. Things were fine until a few weeks ago when I took the Warhead off to clean it. Since then my numbers are way off. I took the whole thing apart this afternoon and cleaned the MAF with electronic contact cleaner. I put everything back together and this time used some silicone sealant on all joints after the MAF sensor.
Check your bridge fitment. It is possible that closing your hood puts pressure on a joint and is letting air seep in behind the MAF. If the weather cooperates this week, I am gong to get mine out and do some data logging.
BTW, I had a few baseline dyno runs Friday and my AFRs were really high. Average was around 14.5 and went as high as 16 in a couple of instances. I'm not sure if the shop's wideband was out of calibration or if I was really running that lean. I was not throwing lean codes, so I'm not sure what was going on. 2004 coupe, dyno'd +/- 300/300 with Stinger intake and Magnaflow catback. I don't think numbers would have been that high if the car was really running that lean.
Put LGM LT headers on this weekend, I am going to go back in a couple of weeks to see what change they made.
Check your bridge fitment. It is possible that closing your hood puts pressure on a joint and is letting air seep in behind the MAF. If the weather cooperates this week, I am gong to get mine out and do some data logging.
BTW, I had a few baseline dyno runs Friday and my AFRs were really high. Average was around 14.5 and went as high as 16 in a couple of instances. I'm not sure if the shop's wideband was out of calibration or if I was really running that lean. I was not throwing lean codes, so I'm not sure what was going on. 2004 coupe, dyno'd +/- 300/300 with Stinger intake and Magnaflow catback. I don't think numbers would have been that high if the car was really running that lean.
Put LGM LT headers on this weekend, I am going to go back in a couple of weeks to see what change they made.
Last edited by Ruler89; Feb 14, 2005 at 11:20 PM.
Safety Car
Joined: Aug 2000
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From: St. Joseph MO
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Originally Posted by Ruler89
Check your bridge fitment. It is possible that closing your hood puts pressure on a joint and is letting air seep in behind the MAF. If the weather cooperates this week, I am gong to get mine out and do some data logging.
Thread Starter
Drifting
Joined: Jan 2005
Posts: 1,419
Likes: 16
From: Oceanside, CA
Originally Posted by Ruler89
I am experiencing a very similar problem with mine. Things were fine until a few weeks ago when I took the Warhead off to clean it. Since then my numbers are way off. I took the whole thing apart this afternoon and cleaned the MAF with electronic contact cleaner. I put everything back together and this time used some silicone sealant on all joints after the MAF sensor.
Check your bridge fitment. It is possible that closing your hood puts pressure on a joint and is letting air seep in behind the MAF. If the weather cooperates this week, I am gong to get mine out and do some data logging.
BTW, I had a few baseline dyno runs Friday and my AFRs were really high. Average was around 14.5 and went as high as 16 in a couple of instances. I'm not sure if the shop's wideband was out of calibration or if I was really running that lean. I was not throwing lean codes, so I'm not sure what was going on. 2004 coupe, dyno'd +/- 300/300 with Stinger intake and Magnaflow catback. I don't think numbers would have been that high if the car was really running that lean.
Put LGM LT headers on this weekend, I am going to go back in a couple of weeks to see what change they made.
Check your bridge fitment. It is possible that closing your hood puts pressure on a joint and is letting air seep in behind the MAF. If the weather cooperates this week, I am gong to get mine out and do some data logging.
BTW, I had a few baseline dyno runs Friday and my AFRs were really high. Average was around 14.5 and went as high as 16 in a couple of instances. I'm not sure if the shop's wideband was out of calibration or if I was really running that lean. I was not throwing lean codes, so I'm not sure what was going on. 2004 coupe, dyno'd +/- 300/300 with Stinger intake and Magnaflow catback. I don't think numbers would have been that high if the car was really running that lean.
Put LGM LT headers on this weekend, I am going to go back in a couple of weeks to see what change they made.
Thanks for the advice, you are probably right on the money. Have you logged any data since using silicone on the connections? Sorry to hear that you are in the same boat as me. Thanks for the bump.
Nick
Pro
Joined: Apr 2004
Posts: 565
Likes: 0
From: St. Louis MO
Yes. My LTFTs dropped from 15-20 down to around 5-8. I unhooked the battery last night to see if a PCM relearn would drop the numbers any lower.
If I had to gamble, I would guess that it was the connection at the MAF and the front of the air bridge.
If I had to gamble, I would guess that it was the connection at the MAF and the front of the air bridge.
Last edited by Ruler89; Feb 15, 2005 at 08:16 PM.
Thread Starter
Drifting
Joined: Jan 2005
Posts: 1,419
Likes: 16
From: Oceanside, CA
I just got done taking everything off. I put it back on and tried to angle the MAF going into the bridge because it seemed like that is what is pushing the bridge up so the hood puts pressure on that joint.. The bridge is finally sitting flat ontop of the condensor cover..
Started loging and it looked like it fixed it. Then I shut the hood and hey the LTFT's stayed the same. Then I opened up and then shut it and they shot right back up again.
Have you contacted Halltech about this yet? I wonder if they can provide some guidance. It looks to me like the bridge is angled wrong so that it won't allow the maf to sit flush without rubbing on the hood...
Started loging and it looked like it fixed it. Then I shut the hood and hey the LTFT's stayed the same. Then I opened up and then shut it and they shot right back up again.
Have you contacted Halltech about this yet? I wonder if they can provide some guidance. It looks to me like the bridge is angled wrong so that it won't allow the maf to sit flush without rubbing on the hood...
