H/C CTS-V: Feels Slow
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#28
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I think 6th is a performance gear in the V, I believe it's needed to reach top speed? 5th will run out of revs around 160mph I believe.
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Check fuel pressure with a gauge. I'm going to guess when he tuned it, he watched the fuel trims but you never know.
Have you cleaned the air filter in a while. Believe it or not, I saw a freshly built Camaro that had an old filter on it and ran like dogsht. Replaced the filter and felt like it added 100 horses.
Did the heads come fully assembled? I've also seen a set of dual valve springs where the valve seats were not replaced. This dual spring did not sit on the seat properly and the car ran like crap due to bind. Also, are the rocker arms overtightened?
Have you cleaned the air filter in a while. Believe it or not, I saw a freshly built Camaro that had an old filter on it and ran like dogsht. Replaced the filter and felt like it added 100 horses.
Did the heads come fully assembled? I've also seen a set of dual valve springs where the valve seats were not replaced. This dual spring did not sit on the seat properly and the car ran like crap due to bind. Also, are the rocker arms overtightened?
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If you look at the ratios, 1-2, 2-3, and 3-4 are all exactly the same gap. Each of those shifts will drop the revs down to 70% of what they were before the shift. 4-5 is a very small gap at 85%, and 5-6 is about like the others @ 67%. 6th is shorter than on most GM 6-speeds, and the 3.73's help too.
I think 6th is a performance gear in the V, I believe it's needed to reach top speed? 5th will run out of revs around 160mph I believe.
I think 6th is a performance gear in the V, I believe it's needed to reach top speed? 5th will run out of revs around 160mph I believe.
For comparison sake. IS-f with 415rwhp = 120-121 traps. E60 M5 with 410rwhp stock traps 116. C63 with 415-420 is also a 120+ car. Guess why. exceptional gearing.
#31
I know were you are comin from... the edge of feeling something is going to break on ya...
stock does ~112 having 350rwhp
+125shot n2o does 124mph.
http://www.youtube.com/watch?v=JrbZo...eature=related
stock does ~112 having 350rwhp
+125shot n2o does 124mph.
http://www.youtube.com/watch?v=JrbZo...eature=related
#32
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That said, it does seem like the best way to enjoy these cars is stock. Sink a lot of money into mods, and it sounds like it can be disappointing.
Last edited by aurora40; 07-27-2011 at 07:41 AM.
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Hey, I'm still happy with the car don't get me wrong. I just think that the car should feel more than what it is now. I really think a lot of the disappointment is in the clutch, and how slow it revs. They did a junk job on that. On the agenda in August is to switch the clutch.
#34
I think the point was that when you get your V1 up to those stated levels, the mentioned vehicles pull good traps vs a 400rwhp V1.