Evo is super laggy
Just got my new motor built already put 1k miles on it and drives awesome with no issues during the break in period
noticed that at stop lights or taking off the car has no go and takes forever for it move. Running a GTX3582R turbo before the build and never had any issues compression test are fine 140 across all cylinders except cylinder one that reads 128 but was stripped from the previous owner and had to fix it. Pistons are 9:1 compression i did have the head ported fully, exhaust, intake, and valves my tune is on July 7th, im ruling out that the head has to be the reason why. Does a ported head really make that much of a difference if its not tuned? |
that is a big turbo.
before the build would u be able to remember your compression figures? have u done a boost leak test? did you change cams while building? and yes, a ported head would need a retune. a tune might be able to solve that. but a built engine should definitely be less laggy if you have gone with higher compression pistons |
Before it ran fine, but the head was never ported and thats what im thinking. It might need more fuel
but I went with a 9:1 compression instead with 85.5mm in bore size im getting the tune done this Friday to hit 700hp was making sure it was nothing else related
Originally Posted by TariqEvo
(Post 11878033)
that is a big turbo.
before the build would u be able to remember your compression figures? have u done a boost leak test? did you change cams while building? and yes, a ported head would need a retune. a tune might be able to solve that. but a built engine should definitely be less laggy if you have gone with higher compression pistons |
Are you on SD tune and do you have AFR gauge?
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Yes it was tuned previously on SD, and no I do not have any guages in the car and was debating on it but looks like you confirmed why I should get them
Originally Posted by 2006EvoIXer
(Post 11878628)
Are you on SD tune and do you have AFR gauge?
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Originally Posted by steven121
(Post 11878630)
Yes it was tuned previously on SD, and no I do not have any guages in the car and was debating on it but looks like you confirmed why I should get them
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i have no exp with SD, but i am sure i remember people saying that SD doesnt handle new changes very well after it is tuned for a certain spec.
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Be careful and stay off boost until you get tuned. You will run lean everywhere.
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All of this is pointless with the car not being tuned..
A 3582 should spool around 5-5500 on a 2.0L. |
Great, thanks a ton! So im assuming a tune will fix this or there is nothing I can do except replace the head with a stocker which I do not want to do
just dont want to ride the clutch to build pressure
Originally Posted by 2006EvoIXer
(Post 11878631)
That explains your rough idle. With oversized valves and porting, you are moving more air into engine with less pressure. Your idle is probably max lean. I have a friend in same situation and his AFR reading is passed 18.0. Lol
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Tuner says I can go slightly into boost during the break in period but dont get crazy lol
trust me driving 1200 miles with no boost is tough
Originally Posted by 2006EvoIXer
(Post 11878633)
Be careful and stay off boost until you get tuned. You will run lean everywhere.
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Pointless? I am asking because I never had a fully ported head before and figured since the motor is built do the top end as well
Originally Posted by letsgetthisdone
(Post 11878638)
All of this is pointless with the car not being tuned..
A 3582 should spool around 5-5500 on a 2.0L. |
Originally Posted by steven121
(Post 11878823)
Tuner says I can go slightly into boost during the break in period but dont get crazy lol
trust me driving 1200 miles with no boost is tough |
Originally Posted by 2006EvoIXer
(Post 11879012)
Yes, but you will quickly forget these 1200 miles once your car is tuned. Lol
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