228/230 Too small?
Teching In
Joined: Jun 2007
Posts: 0
Likes: 0
Heat wrap
Originally Posted by cybernco
Since the weather is getting warmer, your air intake temperature sensor might be suffering from heat soak. The computer pulls timing from your ignition as the intake temp gets higher/hotter. The computer can subtract up to 11 degrees of timing for this. The problem is that the 05-06 GTO suffers from false readings. The AIT sensor is located on the bottom of the MAF Mass Airflow Sensor, which is located directly above the upper radiator hose. If you reach under your MAF while the engine is warm, your hand will get burned by the radiator hose. So the sensor is reporting hoter air intake temperature than your engine is actually taking in and it pulls timing, which kills performance. I put a heat wrap on mine to separate the sensor from the radiator hose. <--NON-SPONSOR INFO REMOVED-->
The real fix is to buy a vector air intake temp relocation kit.
The real fix is to buy a vector air intake temp relocation kit.
Last edited by y2k_ta; Jul 9, 2007 at 01:37 PM.
try the MS-4 and get some nice dual valve springs before you swap heads. That cam has a very nice flat torque curve for its size. You will pick up a lot of power for a cam swap. It wouldn't cost much or be too hard to remove your ls2 intake and have it ported and port matched to your heads and have the TB ported also. Then think about heads if your not satified. You will probibly pick up 50 rwhp with the above mods.
Last edited by 52172; Jun 23, 2007 at 06:25 PM.
I think the power your making is pretty good for your mods. I say throw like a shot on there, nothing crazy maybe like 75-100hp take the car to the track and have some fun with it. You lose no driveability with n20 and you don't have to spray it all the time 
Staging Lane
Joined: Apr 2004
Posts: 79
Likes: 0
Maybe you have a bad batch of springs.. I believe the original poster of the Comp 918 thread said he felt a drop in power which caused him to pull his valve covers and check out the springs - finding 10 of 16 broken.
Keep the cam and gets some decent heads.
I have almost the same cam. Put some heads on it and you will really feel the difference. The Fast 90 isnt a waste either, a ported Fast on a H/C car making over 400hp will be good for approx 20+ peak and 15+ in the curve.
I have almost the same cam. Put some heads on it and you will really feel the difference. The Fast 90 isnt a waste either, a ported Fast on a H/C car making over 400hp will be good for approx 20+ peak and 15+ in the curve.
On The Tree
Joined: Dec 2006
Posts: 126
Likes: 0
From: Indianapolis, IN
Originally Posted by Blades
Maybe you have a bad batch of springs.. I believe the original poster of the Comp 918 thread said he felt a drop in power which caused him to pull his valve covers and check out the springs - finding 10 of 16 broken.
Originally Posted by cybernco
Dude, I had one Comp Cams 918 valve spring break. That caused the valve to drop into the cylinder and that ruined piston #3 along with my whole LS2 block & drivers side head. I seriously doubt that someone broke 10 of 16 springs and he's now just looking for more performance. His engine would have been ruined a long time ago.
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Verdad Gallardo On The Tree
Joined: Dec 2006
Posts: 126
Likes: 0
From: Indianapolis, IN
Originally Posted by mvvette97
I broke 8 out of 16 of the 918s and found it just in time. Took them off and gave them a toss and put a set of Patriot Golds on. Never had a problem since
Originally Posted by cybernco
Dude, that's awesome. To bad I didn't have the same luck. Well, thousands of dollars later, I've got a torque monster. I guess that wouldn't be so if the LS2 had held in there.
