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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 09-01-2006, 04:15 AM   #21
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Yes... Cooney ran the GT1 before his accident, and that Snuggles.bf guy just put a GT1 in his car. My reground cam approximates a GT1, though it'* a bit more mild. You can run one with the stock TC for sure.
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Old 09-01-2006, 11:54 AM   #22
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Yes. The GT1 or similar regrind is the only way to go if your keeping the stock converter. But you defintely NEED a pcm SPECIFICALLY for the cam. ZZP stocks pcms that go with the GT1 so that it is tuned out of the box.
I ran the GT1 with no tune and it was baad.
And IIRC someone got 190 something whp with the GT1, 3" DP, ported TB, and PCM. (Stock heads & exhaust manifolds)
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Old 09-01-2006, 01:44 PM   #23
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Okay, its840 started another thread about rockers and cam so I've been reading it.

now it'* clear that a cam will be more effective across the powerband while rockers will be of greatest benefits in the upper rpms.

Now I'm kinda leaning towards rockers since its ease of installation and ease of removing if demodding. I was curious if the 1.8 rockers won't impact the lower end? I don't want to lose the low end grunt, the low to middle is pretty good but middle to high sucks so it would be nice to open it up so it'* broad across the powerband. Also will this be a feel in the butt mod or just there but you don't know it.
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Old 09-01-2006, 02:26 PM   #24
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You should feel the difference...
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Old 09-01-2006, 03:57 PM   #25
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The loss in the low end shouldn't be too noticeable and you should definitely feel the 1.8s in the mid to upper.
Have you thought about or are going to get pems? They would go nice with the rockers.
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Old 09-01-2006, 04:00 PM   #26
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He'* already got a set of PEMs that he hasn't installed yet.
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Old 09-02-2006, 12:21 AM   #27
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Quote:
Originally Posted by fuelforthesoul1999
Okay, its840 started another thread about rockers and cam so I've been reading it.

now it'* clear that a cam will be more effective across the powerband while rockers will be of greatest benefits in the upper rpms.

Now I'm kinda leaning towards rockers since its ease of installation and ease of removing if demodding. I was curious if the 1.8 rockers won't impact the lower end? I don't want to lose the low end grunt, the low to middle is pretty good but middle to high sucks so it would be nice to open it up so it'* broad across the powerband. Also will this be a feel in the butt mod or just there but you don't know it.
thats exactly what im tryin to figure out.... but since i have M90 is it gonna make any diff then an n/a. also once i go and put the headers on how much lowend will i lose.. just just rockers.... im sorta lost.... FUEL if i figure anything out ill let you know and if you would please do the same... i know a cam you can pretty much pick where you want your power at sorta speak but they are not easy to install.... while rockers can be done in a few hrs.. but you sacurfice low end(if i have this figured out) idk please gearheads help us!!!! lol
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Old 09-02-2006, 01:07 AM   #28
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Loss of low end torque is not even noticeable with higher ratio rockers, but the gains at upper RPM'* will make your eyebrows raise.
High ratio rockers=ease of installation, limited gains
Cam=harder install, power gain across the board.
Quote:
once i go and put the headers on how much lowend will i lose
Again if you lose any low end you wont notice, but you will probably drop 1-2 psi, which you just counteract with a smaller pulley if you don't get KR.
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Old 09-02-2006, 02:48 AM   #29
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Seth, he'* not an L67.
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Old 09-02-2006, 04:12 AM   #30
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ya fuel and i are both pretty much looking to do the same things to our cars. however he is N/A while im BLOWN..

now would the mods realy effect one more then the other..... like it works with this well but wont work with this.. get what i mean... like 1.9 are better for n/a while 1.8 are better for m90 (probaly all wrong but just as a reference) but it would be helpfull to know..... thanks again
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