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Old 06-03-2006, 01:21 AM   #1
ted dibiase
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2003 wrx
wrb

Default Help...what could be wrong & what should I do?

Mods
SBR 16g
TBE
UP
GM Boost Solenoid
SRI
PE 650
Walbro fp
STi TMIC
Cobb AP


I took my car to P & L and had them tune it. After a pre-dyno pressure test and new plugs they started to tune it. Around 16 psi it started to pull timing and the egt was really high. In addition the TMIC was very hot to the touch. The car was putting down around 245 whp and then it would pull timing. This is 40-50 hp less than what "it should be".

As we were discussing the issue while standing in front of my car with it running Jorge noticed a weird click sound that happened every so often. He asked if I heard it and I did, so we listened for a minute or so longer and it continued to happen at random. He brought a few other guys over to see if they might know what it was but when they got over there it stopped doing it. I don't know if it was anything, but it was really weird. They said if it were rod knock that it would be idling funny and it wasn't.

Jorge and the crew recommended that I take it home and do three things:
1. Check compression --- 135 on 3 and 130 on 1...so that is okay right?
2. Check the timing belt --- it was fine.
3. Pull the turbo off and look for damage --- took turbo off and sent to P & L They said everything looked good.

What could be causing these issues?

Stock Manifold?
Bad gas?
maybe stock wg?
Engine damage?

I am frustrated, confused, and ticked. What should I do? Should I go back to stock turbo and injectors?
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Old 06-03-2006, 01:51 AM   #2
anthonyrb98
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the clicking could have been your fans kicking on?
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Old 06-03-2006, 01:57 AM   #3
testes1010
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what brand/type plugs are you running? how much mileage on them? whats your gap?

pull them & check them for condition either way.

only a few things could cause the EGTs to go high & I know Jorge...if he said it was going high, it was really high....
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Old 06-03-2006, 03:10 AM   #4
ted dibiase
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they were NGK... P & L installed them. After less than 1000 miles, one of them looked like it was fouled.
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Old 06-03-2006, 04:26 AM   #5
drees
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Catless TBE?
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Old 06-03-2006, 12:26 PM   #6
ted dibiase
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Quote:
Originally Posted by drees
Catless TBE?
yes, no cats.
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Old 06-03-2006, 12:50 PM   #7
Jasper
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135 and 130psi?

what were #'s for other 2 cylinders?

(that strikes me as ~ 25-30psi low, unless they're all identical)

change your oil, and have an analysis done. that'll give you a ton of insight as to what might be going on.

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Old 06-05-2006, 05:35 PM   #8
ted dibiase
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It was 130, 135, 135, 135 on the compression test. One cylinder had 130, and the rest 135 which is in the normal range according to P & L. Have you done the oil analysis before? I just changed my oil and I only have maybe 700 miles on the new stuff, so that will have to wait. That seems like some black magic though.
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Old 06-05-2006, 06:17 PM   #9
Jasper
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Quote:
Originally Posted by ted dibiase
It was 130, 135, 135, 135 on the compression test. One cylinder had 130, and the rest 135 which is in the normal range according to P & L. Have you done the oil analysis before? I just changed my oil and I only have maybe 700 miles on the new stuff, so that will have to wait. That seems like some black magic though.

they can measure the amounts contaminents in the oil. ie, if they find high levels of brass, that might indicate a bearing that's going or gone bad. they can tell you the level of coolant found in your oil, ie, if you had a minor (or major) headgasket leak. they can even tell you how broken down the oil is (you tell them how old / how many miles are on the oil you send them, and they'll tell you if you should change it more often, change the filter more often, or even that you could safely stretch out the frequency of oil changes a bit).

i suppose it is a bit of black magic? but its VERY worthwhile information, especially if you suspect a problem. it will confirm or deny your suspicions.
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Old 06-05-2006, 06:26 PM   #10
richde
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Doesn't the GM solenoid make a ticking sound? Maybe it's not working right or playing well with the ECU?
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Old 06-05-2006, 09:55 PM   #11
JAzad77
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Default

I had somewhat the same mods as you and the same thing happened to me too. I should have been around 260WHP and the tuner couldn't get past 245WHP. There were like five different other cars with similar mods as mine and they were all pulling 260's with ease.

The tuner found that my car was pulling timing in the tune...After 2 hours or so on the dyno I finally hit 260WHP with ease and I had room to go even higher. I ended up with 260 WHP / 245 WTQ, 18.5PSI of Boost, AFR: G 11.25 on a Dyno Dynamics Dyno.

I could have pushed it a bit more but that was enough for me. I went through all the hoops you have...compression check, plugs, oil change, coolant change, tire pressure adjustment, lighter wheels/tires, intake leak check...so much more. But it all came down to the tuner...he needed to adjust his tune to my car.

It just goes to show you that no two cars are the same. Each car needs to be tuned individually from scratch. I know some tuners take maps from other cars and use them as base maps...thatís a no no in my book. If you pay for a tune, then you should get your money's worth and get it done right (Not implying anything here).
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