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YYESSS...I like it loud, I have a Flowmaster 80 series and I wanna drive and **** people off at the same time, help's me avoid the accidents with the old people saying they didn't hear my car or they didn't see it....but no, really I like noise, but I mean i don't want it to be noisy I want it to have some more power, i greatly appreciate all the responses you guys gave me, good stuff......

 

There are a lot of people that will tell you are making the wrong decision but very few of them own slp lt’s. They are a good deal considering they least expensive stainless/coated header you can buy. I own them and like them. I have no dyno numbers yet but they made a sotp difference.

 

O yeah below is my first post on this sight.

Slp’s gain the same as the other longtubes on the market which is between 15 and 25 rwhp on an otherwise stock motor. I’ve seen all types of headers with all types of different dyno results but you can expect a track gain of 2.5-3mph and .2-.3 tenths off the quarter.

Slp’s are frequently bashed for their low clearance but they are great quality header. They are the least expensive stainless and coated setup you can get.

Gm high-tech dynoed an A4 trans-am with a lid, zo6 intake, catback, and Slp headers with catted Y-pipe and got 347.7hp and 347tq. These are great numbers considering the car was an A4 with a stall and a catted Y. A typical a4 with all the above mods (minus the headers) would probably hit a max of 325rwhp, so you could probablly conclude the headers were worth around 22rwhp.

 

a gear swap has a remarkable way of sorting out low end sluggishness.

The loudmouth + longtubes+ offroad y will be very loud, and you may want to reconsider either 1) using cats or 2) the choice of catback exhaust... UNLESS your fbody isn't your everyday car, in that case you'd only be driving it for pleasure and who cares how loud it is.

Yes I know catalytic converters are expensive... but not any more expensive than a new exhaust system.

 

I'm not endorsing any name brands but the mods in the sig make a significant difference.

 

If you really like loud put a cutout before that 80 series. The 80 series muffler is not a high flow unit so you would also pick up decent hp.

 

i see all the info on the loudmouth but does anyone have no cats with tsp rumbler? too loud also?

 

LS1's need SOME back pressure to run right. Not talking 2" exhaust. But wide open headers and a 4" exhaust is over kill inless you're running big #'s and a lumpy cam.

I'll be happy with my SLP LT's and catted Y,When I get them installed, MAY BABY!!!....I'm listening too...Thanx for the words..

 

I thought a headers were a 2 to 4 hour job, not something that took all day and then some.

 

It might take 2-4 hours for a mechanic in a shop or at a place like speed Inc. But for most of us guys doing it in our garages it'll take anywhere from 6 to 12 hours depending on experience and whether or not you have an extra set of hands. I would suggest setting aside an entire Saturday or Sunday and having a good supply of bandaids, beer and patience.

 

ditto, and I have no cats also.

 

SLP headers are particularly tricky to install due to the bends. They're about an inch or so wider than most headers, so getting them into place takes a bit more inventiveness.

 

SLP Long tubes + no cats + loudmouth = sounds like @$$! my set up: SLP longtubes, of road Y, SLP dual dual, electronic cutouts, have not decided whether or not to guy cats, probably will not