LS6, No EGR Help!

[airmaxon1]

hoping to get some info before i go through with a purchase. im currrently in CA, the mother of all emissions testing. Im hoping to pick up a Ls6 intake used from some members on here. I know they dont have the EGR hookup like the Ls1 does, so by getting an LS6 intake i must remove the EGR hose right? Will blocking this off cause me to fail emissions? Any help is appreciated, Thanks!

[clg82]

hoping to get some info before i go through with a purchase. im currrently in CA, the mother of all emissions testing. Im hoping to pick up a Ls6 intake used from some members on here. I know they dont have the EGR hookup like the Ls1 does, so by getting an LS6 intake i must remove the EGR hose right? Will blocking this off cause me to fail emissions? Any help is appreciated, Thanks!

I am in the exact same boat. Everything that you described in your thread is exactly my situation. I just went ahead and did it. I have not gotten my car emissions tested yet but i have a feeling that if we don't have the egr hose going in there a reputable smogger will fail us. I did mind you leave the actual egr canister thingy with the sensor in it still attached to the manifold. The reason i did that is so if they do a visual maybe they won't know that there was supposed to be a hose attached to the manifold. Hope this helped~Chris

[FORD RECOVERY EXPERT]

use the cam out of a 5.3 litre iron block... and delete the egr functions when you tune it... thats mostly what the factory did w/ the 01-02 models...

[clg82]

use the cam out of a 5.3 litre iron block... and delete the egr functions when you tune it... thats mostly what the factory did w/ the 01-02 models...

I am not sure about the 1999 models but I heard that the year 2000 trans am had a better cam then 01-02 and that it works better with the ls6 intake. Why would he want to downgrade?

[FORD RECOVERY EXPERT]

where did you here that??? the 2000 still had egr... the 01-02 used this cam (5.3) to pass emissions w/o egr and still gained hp from the install. thought that was the OP's intentions???

[clg82]

where did you here that??? the 2000 still had egr... the 01-02 used this cam (5.3) to pass emissions w/o egr and still gained hp from the install. thought that was the OP's intentions???

When I first installed the ls6 intake there were people on this forum saying that the 2000 had a better cam then the 01-02. I am not sure why you would think that the egr would lower horsepower?

[airmaxon1]

use the cam out of a 5.3 litre iron block... and delete the egr functions when you tune it... thats mostly what the factory did w/ the 01-02 models...

would an aftermarket cam accomplish the same thing if i get the egr tuned out? i was planning on an LS6 intake now and a mild cam in a few months

[C&Cbird]

They have any ls6 intake with egr provisions, that way you don't have to go swapping cams and stuff.

[FORD RECOVERY EXPERT]

unsure about the aftermarket bumpstick.... the ls6 w/ egr is an slp item, not that readily available...

egr does slightly lower the hp, why else would we delete it?!?!?!?
the gain i was refering to was from the ls6 intake

[clg82]

But even if he gets a different cam he's still not going to pass the emissions "visual" check without the egr.

[FORD RECOVERY EXPERT]

then how would the 01-02 models pass??? there is no "visual" check here in ...
if the sniffer passes it, your good to go.

[FORD RECOVERY EXPERT]

I am in the exact same boat. Everything that you described in your thread is exactly my situation. I just went ahead and did it. I have not gotten my car emissions tested yet but i have a feeling that if we don't have the egr hose going in there a reputable smogger will fail us. I did mind you leave the actual egr canister thingy with the sensor in it still attached to the manifold. The reason i did that is so if they do a visual maybe they won't know that there was supposed to be a hose attached to the manifold. Hope this helped~Chris

what was the need in quoting what he said???

[airmaxon1]

yeah i saw the slp ls6 intake, too expensive for me, was looking to just pick up a used oem ls6 without the EGR. i know a shop around here thats not really into there inspections, just do the sniffer and kinda wing the rest

[Firebirdjones]

I really wonder if the inspection people are that good, to know the difference between a 98-00 F-body and an 01-02 F-body to the point that they look at whether the EGR tube is there or not????

If they bitch about that I would think they would be flunking the visual for 01-02 cars due to lack of knowledge???

Mr. Ford Recovery is right on the money. 98-00 cars had the larger camshaft with EGR. The 01-02 cars came with LS6 intakes, no EGR and a smallish truck camshaft to compensate. A trade off if you will.

Maybe someone here can chime in as to whether a 98-00 car can pass the sniffer with the LS6 intake (no EGR) and running the stock 98-00 camshaft????? Not sure if the extra overlap on the slightly larger camshaft would cause enough issue or not without some tuning tricks???

But I have seen larger camshafts like the popular 224 duration cam pass a sniffer,,,of course the lobe seperation spread out far enough makes that easier. I believe a good tuner should be able to make it work.

[airmaxon1]

alright thanks for all the info guys!

[cuzimoto]

Ive seen adapters to keep egr with ls6, dont remember where, i have slp lS6 inatake on 99 M6 formula with TR224 cam with 114 lsa, passed no problem. You will fail without egr. Im in CA.

[Orange99z28]

i'm in IL but i passed the test with a cam, full intake magnaflow exhaust and open cutouts, cracked me up, just go to a guy that looks like he's into cars - worked for me. no visual or sniffer here though, as long as the obdll passes you're good (as long as you're not red flagged)

[uicnick]

Are you guys blocking off the EGR? Doesn't it throw codes?

[C&Cbird]

Yes, you have to get that tuned.