boost comes in really early after rebuild?
01-28-2006, 09:28 PM
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boost comes in really early after rebuild?
sup guys,
before i had my motor rebuilt,i had my turbo b18b tuned on uberdata on 10 psi,no problems or anything. then i rebuilt my motor with forged internals,but same compression. now i know before i go on,i <U>know</U> i need to get a re-tune,and i am as soon as i get some cash. anyways,so everythings together and ive been driving the car for now 13xx miles. when we first got the car together,the car ran SOOOO sluggish and boost came in REALLY early,like full boost on a t3/t04 at like 2,500. so i posted on here and someone said the timing is retarded. so i advanced the timing as far as it would go,and the car seems to run smoother and better,and boost seems to hold off a little longer. But even still,the car runs kinda sluggish,even though i need a tune. like i can hit any amount of boost,and the car will go like its still running all motor,it doesnt move at all really. and boost seems to still come in early. before the rebuild,full boost probably came in around 3,500,now its coming in at about 3,000. could the sluggish problem,and the early boost be a timing issue? not ignition timing,but cam/crank timing,like the timing belt is off. or do you just think it is in fact the tuning,and i need a tune that bad. im just trying to figure it out,b/c im not trying to go get it tuned,get it on the dyno and find out my timing or something is off,so then i gotta fix that,then go all the way back to the dyno and do it again.
before i had my motor rebuilt,i had my turbo b18b tuned on uberdata on 10 psi,no problems or anything. then i rebuilt my motor with forged internals,but same compression. now i know before i go on,i <U>know</U> i need to get a re-tune,and i am as soon as i get some cash. anyways,so everythings together and ive been driving the car for now 13xx miles. when we first got the car together,the car ran SOOOO sluggish and boost came in REALLY early,like full boost on a t3/t04 at like 2,500. so i posted on here and someone said the timing is retarded. so i advanced the timing as far as it would go,and the car seems to run smoother and better,and boost seems to hold off a little longer. But even still,the car runs kinda sluggish,even though i need a tune. like i can hit any amount of boost,and the car will go like its still running all motor,it doesnt move at all really. and boost seems to still come in early. before the rebuild,full boost probably came in around 3,500,now its coming in at about 3,000. could the sluggish problem,and the early boost be a timing issue? not ignition timing,but cam/crank timing,like the timing belt is off. or do you just think it is in fact the tuning,and i need a tune that bad. im just trying to figure it out,b/c im not trying to go get it tuned,get it on the dyno and find out my timing or something is off,so then i gotta fix that,then go all the way back to the dyno and do it again.
01-29-2006, 08:00 AM
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Re: boost comes in really early after rebuild? (Newt Dog)
yeah man, the belt itself. take the belt back off, start from scratch and re-time it. should feel much better
01-29-2006, 12:46 PM
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Re: boost comes in really early after rebuild? (I Have an STD)
well i forgot to add we did check the motor with a timing light. and pretty much the light seemed to be on point. could the motor timing still be off?
01-29-2006, 01:27 PM
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Re: boost comes in really early after rebuild? (SpoolnByYou)
so why are you boosting it if you need to get it re-tuned ? i dont get it.
the car shouldn't be seeing full boost, etc. or any boost till you have at least checked to see what the a/f is running at.
im lost.
the car shouldn't be seeing full boost, etc. or any boost till you have at least checked to see what the a/f is running at.
im lost.
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01-29-2006, 10:53 PM
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Re: boost comes in really early after rebuild? (SpoolnByYou)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SpoolnByYou »</TD></TR><TR><TD CLASS="quote">i have an air/fuel gauge.</TD></TR></TABLE>
And we all know how accurate a bunch of flashing lights are...
And we all know how accurate a bunch of flashing lights are...
01-29-2006, 11:05 PM
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Re: boost comes in really early after rebuild? (Das Schmoo)
basically... what we're trying to say is.
#1 never (high) boost an untuned car...
#2 make sure you KNOW what timing you are REALLY running
#3 KNOW what your AFR's are...and a light show doesnt count. YOU NEED A DATALOGGING WIDEBAND....or at least just a regular wideband
#4 If something is wrong...dont keep doing whatever it is that makes it do it. STOP. THINK. FIX. TEST.
I personally think you should take it to a tuner...and PAY them to make it right. Take notes and learn a little bit. Im not sure you're capable of doing this the right way before you expletive something up. No offense, just trying to save you hassle in the long run.
#1 never (high) boost an untuned car...
#2 make sure you KNOW what timing you are REALLY running
#3 KNOW what your AFR's are...and a light show doesnt count. YOU NEED A DATALOGGING WIDEBAND....or at least just a regular wideband
#4 If something is wrong...dont keep doing whatever it is that makes it do it. STOP. THINK. FIX. TEST.
I personally think you should take it to a tuner...and PAY them to make it right. Take notes and learn a little bit. Im not sure you're capable of doing this the right way before you expletive something up. No offense, just trying to save you hassle in the long run.
01-30-2006, 04:30 AM
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Re: boost comes in really early after rebuild? (~RTErnie~)
wait,who ever said i had a cheap *** 50 dollar light show air/fuel gauge?
im pretty sure im in the clear,seeing that im using a wideband o2 sensor,instead of the stock narrowband,with a cheap a/f gauge.
im pretty sure im in the clear,seeing that im using a wideband o2 sensor,instead of the stock narrowband,with a cheap a/f gauge.
01-30-2006, 10:50 AM
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Re: (SpoolnByYou)
His car was tuned for the same setup, compression, and turbo.Aslong as the AFR's are aight and the timing isnt wack, dont worry.
Im not saying "dont get it re-tuned" but i dont think its ur problem.Maybe not completley.Fix ur car THEN get it retuned, it should be running pretty good semming nothing has changed really except strength.
Im not saying "dont get it re-tuned" but i dont think its ur problem.Maybe not completley.Fix ur car THEN get it retuned, it should be running pretty good semming nothing has changed really except strength.
01-30-2006, 11:16 AM
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Re: (93supercoupe)
sup guys,
checked the cam timing today......as i was right,and you guys were,the timing is off about 2 teeth. will fix tonight and update. thanks for the help
checked the cam timing today......as i was right,and you guys were,the timing is off about 2 teeth. will fix tonight and update. thanks for the help
01-30-2006, 02:56 PM
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Re: (SpoolnByYou)
done deal
did the timing belt and took it out,ALOT better. now it just feels like i need the car tuned,instead of it feeling like im dragging a boat anchor. thnaks guys for helping
did the timing belt and took it out,ALOT better. now it just feels like i need the car tuned,instead of it feeling like im dragging a boat anchor. thnaks guys for helping
01-30-2006, 03:53 PM
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Re: boost comes in really early after rebuild? (Newt Dog)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Newt Dog »</TD></TR><TR><TD CLASS="quote">You answered your own question... Sound's to me your timing belt is off.. 
</TD></TR></TABLE>
</TD></TR></TABLE>
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