SLP LS6 Intake Manifold worth it?

is getting the SLP LS6 Intake Manifold worth it? how much horsepower can i expect to gain? any other beniefits? Thanks.

no egr crap and you should gain about 10hp on a bolt on car, more for a internally modified car

whats egr? i always read people talking about it but i dont know what it is

EGR valve is exhaust gas recirculation valve. It pulls exhaust gasses out of the exhaust manifold and dumps it into the intake directly behind the throttle body. It is an emission control system. The LS6 intake from 01-02 LS1 f-bodys as well as all C5 intake manifolds do not have egr provisions, but the SLP LS6 intake (http://www.slponline.com/view_product.asp?PARTNUMBER=30041) does have egr provisions so you will not get the benefit of not having egr with the LS6 intake from SLP.

so is not having a EGR better?

EGR robs no power.

an ls6 intake by itself isnt worth much.get a cam or headers to go with it or invest in other mods more worthwhile imo.

some people will say that the pipe that extends into the intake, directly in the intake flow path, robs some hp...

:rolleyes: well i suppose it could...maybe 1/4 of hp....

it's more of an engine bay clean up trick...

if you remove it you will trigger the SES light, which can easily be removed with tuning

when i bought my intake they supplied their own custom EGR kit.it actually looks cool.:cool:

The exhaust gasses can also slightly heat the incoming air. I really don't think you would notice a huge increase, but cooler air makes more power.

Will a 99Z have a egr to remove?:confused:

I dont think it is worth it, 10hp for what? 465 bucks!! and thats the SLP LS6 intake with the EGR provision. U could get long tube headers for that, and they yield twice the ammount of hp. That would be my LAST mod to do if done at all.

and yes a 98-2000 ls1 will have egr

Originally posted by LT-14me
I dont think it is worth it, 10hp for what? 465 bucks!! and thats the SLP LS6 intake with the EGR provision. U could get long tube headers for that, and they yield twice the ammount of hp. That would be my LAST mod to do if done at all.

i already have LT headers and complete exhause work, trying to find out other things to do to gain HP because better heads and cams are out of the question.

i would say shop around for a used ls6 intake from the vettes or the late year fbody. seems like i've seen them for about $300

i really don't think the SLP version is worth it.

have you looked at roller rockers? 1.85 ratio full roller rockers and new springs should cost about $500 and should yeild about 15hp

Does the Weind or Holley LS6 "style" manifolds come with egr? You would think that they would make more aftermarket manifolds with egr, since most f-bods had them.:confused:

:D yeah but most guys willing to do a manifold swap are more than willing to remove all that crap.

it makes the engine bay look really cluttered (as if it weren't already). and as simple as it is to program out, and block off...why not.

and the Holley unit DOES have the hole for the egr. however if you plan to remove it you can just put a 1 3/8th inch block plug in the hole. works perfect

Originally posted by teke184
some people will say that the pipe that extends into the intake, directly in the intake flow path, robs some hp...
:rolleyes: well i suppose it could...maybe 1/4 of hp....


Try this. Get out your shop vac and hook the hose on the output. Turn the vac on. Now stick your finger into the path of the air. Blows pretty hard on your finger doesn't it? What do you think that that might do to the air flow in the intake?

I'd go get the LSX intake for that price.

Does anybody have any pics of the egr system? I haven't really heard much about it. The LSX intake will work great w/ other air mods from what I here.

the EGR system is that black hose/tube that starts right behind the throttle body on top of the intake, curves towards the passenger side, into a cylindrical valve thing, mounted on a bracket, and then a pipe goes down into a fitting that is attached to the manifold.

that's it....

you block off the fitting on the manifold and you plug the hole in the intake....remove everything in between and it's gone...then you need to program it off the computer or you will have an SES light constantly.

car with egr (http://images.cardomain.com/member_images/3/web/243000-243999/243722_53_full.jpg)
car without egr (http://images.cardomain.com/member_images/3/web/243000-243999/243722_211_full.jpg)

what if you have emmisions in your state how do you pass with no egr? how do the 01+ pass? would mine or would they say its a 00 and should have egr?

something about the cam i think is how the later models passed emissions, not positive.

it is possible that you could pass the sniffer without the egr, however if they check the computer they'll notice you had it programed off or if it's not there (functioning).

that is basically why the aftermarket manifolds have the provisions...

yes,GM eliminated EGRs in our cars by using more cam timing.

I would go with the holley LS6 "Style" manifold instead, i think its around $400 new? And it yields more hp. The LSX manifold is nice but for about $600+ they can keep it.