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Yes, I've read all the threads but I'd like some specific input.
From what I've read long tubes will give me 30 - 40 RWHP with high flow cats. I find it hard to justify about $1,500 for these gains. I've installed headers before and am not excited about installing myself so $1,500 would be a low ball number for something like the LG street series package installed.
I have a K&N HIPK installed which they advertise as up to 13 HP gain. I find SOTP comments humerous but I do feel an improvement with the K&N. Not sure how much.... I paid $100 for the K&N used from a forum member. I'm pleased with what I got for the money spent.
I find it hard to justify the cost of long tubes for the return. Not interested in additional mods like heads and cam. If I were I know long tubes would be needed for a complete package.
I don't think it is even 25-40 HP. The tune gets 10-15 so the headers give only 15-20. The best bang for the buck is NOx. The question is do you want the bottle in your trunk?
I have driven both LT cars and LT cars with moderate cams. Am not sure that 40 hp is the result of LT only but they do make a very noticeable difference in not only performance but sound as well. Be careful here since if you do not wish any more sound, LT's are propbably not for you! (I have Ti's as well and they really howl...)
I also added a Stealth II cam and LS6 manifold and that resulted in another nice boost. After tune, my stock headed 99 FRC put down around 380hp to the ground with great torque and drivability.
You can do headers for less than $1500, if you're willing to do some research and parts ordering and have a knowledgable installer or have the ability and the equipment to DIY.
Yes, I've read all the threads but I'd like some specific input.
From what I've read long tubes will give me 30 - 40 RWHP with high flow cats. I find it hard to justify about $1,500 for these gains. I've installed headers before and am not excited about installing myself so $1,500 would be a low ball number for something like the LG street series package installed.
I have a K&N HIPK installed which they advertise as up to 13 HP gain. I find SOTP comments humerous but I do feel an improvement with the K&N. Not sure how much.... I paid $100 for the K&N used from a forum member. I'm pleased with what I got for the money spent.
I find it hard to justify the cost of long tubes for the return. Not interested in additional mods like heads and cam. If I were I know long tubes would be needed for a complete package.
Your thoughts?
Rick
I would definitley do headers and tune. its worth it even on a stock motor.
Between LG Pros w/ Jet Hot coating and a few other extras (tools for install, tune, etc) we're probably in it for around $3500 for the 'header mod'. Was it worth it? Technically....no. But I always wanted a car w/ headers so in the end...yes.
You might want to look into TSP new LT headers. They are mild steel but are ceramic coated and sell for under $600. There is a thread that I just read about them earlier today so it shouldn't be to hard to find.
you can get the Jet hot headers for $650 shipped. after that a good tech should take 3-4 hours... anymore is just lazy from what i've herd from all the DIYers... so $75 an hour or whatever their rate is x4 = $300ish so $950 installed.... Dyno tune or mail order tune gonna run you about $250ish... so now $1200. 1200/35hp = $34.28 per hp... not really that bad..
Headers will increase fuel econ... so just look at it... as in about 10 years they will pay for themselves...
If you are looking for more engine power gears won't give you that. They will give you a mechanical advantage at the cost of more RPMs. So you will accelerate faster but when cruising you will be at a higher RPM. This may not be an issue for you. So it depends what you want out of the mods.
Long tube headers and high flow cats are a very popular upgrade adding a seat-of-the-pants HP difference. But there's a trade-off, that being noise. If you like doing road trips, longer duration than just to/from work, you may want to re-thing this, or investigate it further?
I'm a fan of doing a custom tune, which depending upon how your car is currently running, can add 25-30 HP. A custom tune runs about $550, usually with three dyno runs: before, after, then tweeking, and a final run. A $250 tune is a "canned" tune, usually without any dyno testing. Simply a reprogram based upon other cars the tuner has done with similar modifications.
Find a tuner with Dyno capability on-site, or invest in LS1 Edit and EASE software and you can do it by email with a competent tuner.
From: 2007 Nat'l Corvette Challenge 11.50 index Champ. New Jersey
I ran a best of 11.62@ 119.x mph before my header install.
After the headers & a retune, although I added an RPS clutch (maybe a tenth gain) & skinnies for the run(maybe another tenth gain).This would have gotten me a best of 11.42 @ 119.x mph.
I ran a best of 11.21 @ 122.x mph. Think the headers helped?????
I do!
Ron