C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Feb 12, 2008 | 11:26 AM
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I'm in process of deciding headers. Hedman Elites sound good, but I think I'm going with the Hooker 5151-1's. Nopw as far as EGR, AIR blah blah blah go, is it really worth the time to delete all of that junk? MN is a no check state, but The deletion seems like a lot of work. I'm not concerned about SES light, because it's been on since I bought the car. What do you suggest?
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Old Feb 12, 2008 | 11:36 AM
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Originally Posted by JonnyAngle
I'm in process of deciding headers. Hedman Elites sound good, but I think I'm going with the Hooker 5151-1's. Nopw as far as EGR, AIR blah blah blah go, is it really worth the time to delete all of that junk? MN is a no check state, but The deletion seems like a lot of work. I'm not concerned about SES light, because it's been on since I bought the car. What do you suggest?
Yes, getting the AIR crap out of there makes the car much easier to work on later. The EGR, eh, neither here nor there, but definitely the air crap.
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Old Feb 12, 2008 | 12:46 PM
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Originally Posted by jsup
Yes, getting the AIR crap out of there makes the car much easier to work on later. The EGR, eh, neither here nor there, but definitely the air crap.
I assume those are technical terms!
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Old Feb 12, 2008 | 01:11 PM
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Originally Posted by JonnyAngle
I'm in process of deciding headers. Hedman Elites sound good, but I think I'm going with the Hooker 5151-1's. Nopw as far as EGR, AIR blah blah blah go, is it really worth the time to delete all of that junk? MN is a no check state, but The deletion seems like a lot of work. I'm not concerned about SES light, because it's been on since I bought the car. What do you suggest?
Stainlees Works long tubes w hiflo cats - bitchin' setup and sounds crazy!
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Old Feb 12, 2008 | 01:16 PM
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I second the Stainless Works setup
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Old Feb 12, 2008 | 05:02 PM
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Originally Posted by BADDUCK
I assume those are technical terms!
Yep
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Old Feb 12, 2008 | 05:03 PM
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Just make sure the primaries/collector aren't too large on those hookers. Its kinda pointless installing anything high rpm on a tuned port setup. As far as smog delete, all you have to do is remove the equipment and install a delete pulley. You actually dont even have to install a pulley. I ran mine with the pump disconnected for a long time. By pulling the factory headers you're doing half the work already. If its a no check state there is no reason to retain it at all. And just disconnect the vacuum line on the egr pot and thats done.
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Old Feb 13, 2008 | 04:08 AM
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Originally Posted by JonnyAngle
I'm in process of deciding headers. Hedman Elites sound good, but I think I'm going with the Hooker 5151-1's.
It's 2151. The extra "-1" means ceramic coated. You will have to drill and weld your own O2 sensor bung on the Hookers.


Originally Posted by JonnyAngle
Nopw as far as EGR, AIR blah blah blah go, is it really worth the time to delete all of that junk? MN is a no check state, but The deletion seems like a lot of work. I'm not concerned about SES light, because it's been on since I bought the car. What do you suggest?
Removing AIR will not throw codes. Don't know about EGR delete. Removing AIR will make it a heck of a lot easier to work on the front of your car and and really cleans up the engine bay. These Hookers give very nice spark plug access. Just tuck the AIR connectors out of sight incase you want to go back to AIR. The pump can be gutted if it's noisy. That's free and nobody but you will know.
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Old Feb 13, 2008 | 08:12 PM
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From: denver colorado
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Originally Posted by steve haverl
Stainlees Works long tubes w hiflo cats - bitchin' setup and sounds crazy!

UPDATE

Just had to blow a Colorado emissions test today for tag renewal and passed with:
HC = 0.69 vs standard of 1.20
CO = 3.199 vs 20.0
CO2 433
NOx = 1.82 vs 3.0

Car had not been on the road for over two months, but today it was in the 60s; ran it for about 30 minutes on the highway prior to test.
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