Coming May 11, MTI Stage 2E/G1 Dyno Results
05-11-2005, 09:54 PM
#24
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Originally Posted by 1BadMoFo
Bo, I would be pumped if I got that much at the wheels! Here's to hoping!
. I did a set of 5.3s for Jlaw a while back and hes got the F13 cam and thats just about to the penny what he put down so I know you are pumped- 400 rwtq will glue your eyeballs to the back of your skull
05-12-2005, 04:50 PM
#25
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yeah, the car feels insane...I actually was a bit shy of the power for the first couple of hours LOL
One thing I'm not pumped on is the idle at initial start up...the rpm's will rise and fall for about 15 seconds, is that common, or did they maybe miss the tune a bit?
It settles down right after that and idles great though.
One thing I'm not pumped on is the idle at initial start up...the rpm's will rise and fall for about 15 seconds, is that common, or did they maybe miss the tune a bit?
It settles down right after that and idles great though.
05-12-2005, 10:30 PM
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I'd have to check it, it was done by uh......Jantzer......sorry man....a while back though, couple years ago.
Tonight though, on 2 cold starts, it idle'd damn near perfect, so we'll see.
a better question is, what size should the hole be?
Tonight though, on 2 cold starts, it idle'd damn near perfect, so we'll see.
a better question is, what size should the hole be?
05-12-2005, 10:34 PM
#28
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I thought you didn't have to drill the hole if you got it tuned?? And yes the car is definately insane, I still can't believe how quick it goes through gears with the stock 3.42's.
05-13-2005, 12:03 AM
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Yes, the IAC motor has only so much movement to compensate for idling and will have to be "helped" with opening up the bleed hole. Start with a 3/16 and go up in small increments until it idles its best, the largest I have seen with a cam that size is 7/32 or so.
05-13-2005, 07:02 AM
#31
You really don't need to enlarge the hole IMO. I have done several cars and never touched the hole. The car shouldn't hunt for idle at startup at all. I had that issue before and resolved it. I know of several cars, with a bigger setup then yours that have a stock tb hole and no startup issues. JMO
05-13-2005, 07:11 AM
#32
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Originally Posted by 1BadMoFo
Bo, I'll keep it in mind. It ran pretty awesome at start ups last night, so I'll just keep monitoring it for now.
I have also seen pretty healthy combos still runnin on the stock size bleed hole.
05-13-2005, 07:33 PM
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Originally Posted by Black02SS
You really don't need to enlarge the hole IMO. I have done several cars and never touched the hole. The car shouldn't hunt for idle at startup at all. I had that issue before and resolved it. I know of several cars, with a bigger setup then yours that have a stock tb hole and no startup issues. JMO
I started it up tonight from dead cold, and it did it again for about 10 seconds...Speed Inc is about 4 hours away from me, so if I can solve it without driving all the down there, I would be pumped.
05-13-2005, 07:51 PM
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Originally Posted by f-bodman
I thought you didn't have to drill the hole if you got it tuned?? And yes the car is definately insane, I still can't believe how quick it goes through gears with the stock 3.42's.
05-14-2005, 02:40 AM
#36
Originally Posted by 1BadMoFo
OK...so you have had that issue before and resolved it, what did you do?
I started it up tonight from dead cold, and it did it again for about 10 seconds...Speed Inc is about 4 hours away from me, so if I can solve it without driving all the down there, I would be pumped.
I started it up tonight from dead cold, and it did it again for about 10 seconds...Speed Inc is about 4 hours away from me, so if I can solve it without driving all the down there, I would be pumped.
05-14-2005, 06:31 AM
#37
You'll need to do more than get the IAC counts right to make the dead-cold idle right. It's going to take some adjustment to the VE tables because at your O2 sensors don't work for the first few seconds of a start up. If your VE tables are off, your car's going to stumble and idle like *** until the O2 sensors kick in and adjust your fuel trims. Once the VE tables are fixed, it's a beautiful thing!
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2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
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05-14-2005, 07:35 AM
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Originally Posted by Black02SS
Its all in the tuning of the car. If you have access to a scanner of some sort(efilive/hptuners), check the IAC counts of the car when fully warmed up. I have noticed that some of the issues come from the IAC couts being off. If the IAC counts are off, you can adjust it from the set screw on the TB and not have to drill a hole. This is how I have tuned several cars without drilling the TB.
05-14-2005, 07:35 AM
#39
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Originally Posted by Patrick G
You'll need to do more than get the IAC counts right to make the dead-cold idle right. It's going to take some adjustment to the VE tables because at your O2 sensors don't work for the first few seconds of a start up. If your VE tables are off, your car's going to stumble and idle like *** until the O2 sensors kick in and adjust your fuel trims. Once the VE tables are fixed, it's a beautiful thing!
05-14-2005, 08:07 AM
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PatG @ Black02SS are both correct to a degree. Doing both things help with cold start idle but it seems changing the VE tables is a more desired at better route than messing with the TB and checking the IAC's. Coming from someone who drilled his TB blade to help it idle and then wound up filling it back in due to a different setup, don't drill the hole. Drilling the hole is a poor man's way of getting more air to the motor and allowing it to idle. Proper tuning does it also. When I installed my 224 I drilled a hole in the TB blade and it helped. Later on after adding my heads during tuning I didn't need the hole anymore so I had to epoxy it over.