STS Owners who have Dynoed ====>
09-14-2005, 04:39 PM
#1
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STS Owners who have Dynoed ====> So I just got back from my mustang dyno session with Kurt from Vector Motorsports. I have a 2004 GTO M6 with STS GT67 Turbo, STS FMIC, MBC,42 lb injectors, and a BAP. He was a great guy and answered most of my questions, but we ran into a few problems along the way. First, Nelsons, the company that sells mail-order tunes for STS, locked my pcm which prevented Kurt from adjusting things. So, I decided to just buy one he had in stock someplace else. So we get that one and start her up. The first and second runs we adjusted the boost to the right level. On the third pull, it only got up 370/360. After that, it began idling betweem 1300-2000 rpm, which he attributed to a faulty IAC motor. For the highest run of the day, we were at 8.8 psi, 22* of timing, IAT's hoovering over 100*F, outside 80*F, BP 29.88, 53% humidity, a perfect A/F ratio, and got 380/380!!! The full 8 psi of boost didnt come on until 4500 rpm and WOT was at 2500 rpm. When we looked uder the hood, oil was squirting out as well. This by the way was at 2:30 pm and I have been there since 9:00 am. He tells me that I have 3 things I have to fix in order for him to get the numbers I should be:
1. take off the cats and weld in straight pipes. He says my cats are getting roasted under that much boost and they are causing the insane lag.
2. call STS and see why oil is escaping.
3. replace the IAC motor.
Has anyone else ever had this much of a problem? I mean for everything I have in here, those numbers make me want to punch myself in the face. I can't be the only STS that has trouble with this. Please help.
1. take off the cats and weld in straight pipes. He says my cats are getting roasted under that much boost and they are causing the insane lag.
2. call STS and see why oil is escaping.
3. replace the IAC motor.
Has anyone else ever had this much of a problem? I mean for everything I have in here, those numbers make me want to punch myself in the face. I can't be the only STS that has trouble with this. Please help.
09-14-2005, 07:20 PM
#3
I have never had those problems.I have the 60-1 runnin 8psi with methanol no intercooler and I'm pushing 475rwhp and 494torq. the only things I have changed were my valvue spring and a 255 walbro fuel pump. everything else is stock.. Need to double check on the oil retun lines. Sounds like something is not installed right.
09-14-2005, 07:48 PM
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Spmething seems wrong. I seen alot of STS dynos on here and most of them are upper 400's to lower 500rwhp@8psi.
Couple thing that could be going on.
1. You running stock clutch? If so that thing could be slipping and maybe thats why theres so much lag.
2. Valve float maybe? Not sure if its a problem on the GTO's but if you are getting it you won't make anymore power.
Couple thing that could be going on.
1. You running stock clutch? If so that thing could be slipping and maybe thats why theres so much lag.
2. Valve float maybe? Not sure if its a problem on the GTO's but if you are getting it you won't make anymore power.
09-14-2005, 10:25 PM
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I had some oil issues until I did the LS6 valley conversion. It was pushing it out the cover. Now it does fine. Mine made 514 at 10psi but I don't have cats. It's at full boost by 3800 and that is with the 67 turbo. Be sure and check for any exhaust leaks. Mine had a small leak at the header collectors and it made a world of a difference in how it spooled.
09-14-2005, 11:11 PM
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could you explain what the LS6 valley convresion is? I have a SPEC st. 3 clutch/flywheel sitting in my house waiting to be installed, but am running the stock clutch right now. So I should check or have done these things:
1. replace clucth/flywheel
2. take off cats
3. check oil return lines
4. check for exhaust leaks
5. check for valve float
Thanks for any advice given. I just want this to get straightned out as soon and as inexpensive as possible. I have had soooo many problems with this kit I am about to cry. Thanks
1. replace clucth/flywheel
2. take off cats
3. check oil return lines
4. check for exhaust leaks
5. check for valve float
Thanks for any advice given. I just want this to get straightned out as soon and as inexpensive as possible. I have had soooo many problems with this kit I am about to cry. Thanks
Last edited by geegro05; 09-17-2005 at 06:26 PM.
09-15-2005, 12:48 AM
#7
Sounds like the PCV system is not installed right or not switching over on boost IMHO. Get yourself a jumper wire and test the PCV switching valve by jumping the hobbs switch underhood. Do you here the oil pump step up when under boost? Exactly where was the oil squirting from, dipstick blown out?
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09-15-2005, 05:02 AM
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Originally Posted by geegro05
could you explain what the LS6 valley convresion is? I have a SPEC st. 3 clutch/flywheel sitting in my house waiting to be installed, but am running the stock clutch right now. So I should check or have done these things:
1. replace clucth/flywheel
2. take off cats
3. check oil return lines
4. check for exhaust leaks
5. check for valve float
The only other problem is that I won't take my car back to the place that installed the kit. I called them today to ask a question and were very rude. Thanks for any advice given. I just want this to get straightned out as soon and as inexpensive as possible. I have had soooo many problems with this kit I am about to cry. Thanks
1. replace clucth/flywheel
2. take off cats
3. check oil return lines
4. check for exhaust leaks
5. check for valve float
The only other problem is that I won't take my car back to the place that installed the kit. I called them today to ask a question and were very rude. Thanks for any advice given. I just want this to get straightned out as soon and as inexpensive as possible. I have had soooo many problems with this kit I am about to cry. Thanks
09-15-2005, 06:39 AM
#9
mustang dyno's always less, but I saw a STS dyno the other day on a stock SS and do over 400rw at 5.5lbs on a non mustang dyno.
The tuner ditched the sts program after 1 pull, and made a new one.
The tuner ditched the sts program after 1 pull, and made a new one.
09-15-2005, 06:44 AM
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Originally Posted by TTSSZ
mustang dyno's always less, but I saw a STS dyno the other day on a stock SS and do over 400rw at 5.5lbs on a non mustang dyno.
The tuner ditched the sts program after 1 pull, and made a new one.
The tuner ditched the sts program after 1 pull, and made a new one.
Yeah, I have yet to see a hand held tuner do any good.
If you want a serious program, go to someone with LS1edit or HPTuners and have them create one specifically for your car. Much much more to gain from that.
09-15-2005, 08:14 AM
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yeah thanks for the help guys. I just gotta keep having **** fixed. I am not sure if everything is installed correctly. I am having a new shop take a look at it to see if they can diagnose the problem. The oil was squirting from a little plastic/foam breather on by the front of the passenger side engine cover.
09-15-2005, 11:08 AM
#13
Originally Posted by red91z
The LS6 PCV conversion vents much better than the stock system. Check out the how to section.
He's running an 04 GTO should be no conversion to the LS6 PCV system. Just so you know several have said in PM or person to me that the Nelson tune is
09-15-2005, 11:54 AM
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I ran 385/402 on a bone stock SS @ 5# in July before the turbo was fully broken in. I also was on the stock clutch with very minior sliping and stock valve springs and push rods. I haven't dynoed since then but I've got valve springs, push rods and a clutch in it now and the turbo is broken in and spooling faster.
09-15-2005, 04:02 PM
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yeah this has been in my car for a couple months. i know the turbo is fully broken in. I wished he would have dynoed it before he took out the old pcm because she felt real strong the morning of the session. Its kind of funny that i am the only person with an STS kit who has problems in this area. ohhhh well.
09-15-2005, 04:32 PM
#17
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I have never heard of oil coming out the sts pcv setup, give them a call for suggestions, perhaps a defective piece?
Spooling at 4500? Check for leaks both directions and the tune.
8psi and 380hp? Get a new tuner.
Cats are not your problem. I made 420 at 5psi with cats, full spool by 3200. Get a new tuner.
The idle issue, again likely the tune, not the IAC, get a new tuner.
Spooling at 4500? Check for leaks both directions and the tune.
8psi and 380hp? Get a new tuner.
Cats are not your problem. I made 420 at 5psi with cats, full spool by 3200. Get a new tuner.
The idle issue, again likely the tune, not the IAC, get a new tuner.
09-15-2005, 06:01 PM
#18
My kit made 467 stock LS1 with the T60 by previous owner with cats. I myself got an ORY becuase I didnt like the idea of ceramics coming out of the cat and beating the **** out of the turbine wheel as a few others have. YMMV
09-15-2005, 11:17 PM
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this guy is recommended by everyone in my area. a few moderators over at ls2gto.com say he is one of the best in the business. He has been tuning GTO's, Twin turbo GTO's and other STS kits, but this is the first time something like this has happened. We are going to go over all the connections to see whats up hopefully sometime next week.
