Dframptonot

Okay. Im on the hunt for more power. Ive scrapped my idea of headers.
Ive currently got a LS1 C5 2002 Vette. Has Jet Performance Chip, Vara Ram Intake, B&B Bullet Exhaust, larger air coupler done to the performance type upgrades.
Im looking to install a BBK SSI Intake Manifold with their matching throttle body. Along with that I'm looking at doing a Granatelli Mass Air Flow Sensor. What do we think? How much HP you actually think at the rear will be added? How easy/hard is this for me to install myself? ANyone know the CHEAPEST source for this stuff? I've always bought from mid america motorworks.

Dframptonot

Forgot.
Also want to do an SLP New Under Pulley.

With all of the above, what do we think about emissions? Will i possibly fail NJ Regulations. Please only responses from people who know the facts.

BLKOHZ06

Skip all that stuff and install a bigger cam for the same price. Bigger bang for the buck + twice the power to the rear.

vettenuts

BBK - Not worth anything over the LS6 intake

Granatelli - Sure way to have MAF issues

80mm TB - Waste of money


Headers is a smarter move. The three items you are looking at will be a total waste of money. Do a search on Granatelli, you will quickly find how many guys have run into problems with it.

Dframptonot

Notice the emissions part in my post?
Obviously not.

gleds

Do shorties then with cats and a dyno tune. Chips usually dont do to much.... The underdrive pulley might be a good idea too, but you probably wont feel a thing.

Have you thought about gears maybe? Just a thought...

Blow Torch

I wouldn't expect any real increase with any of those mods.

Camjamsdad

There is a word running around for Granatelli, Crapatelli. I didn't make this up. You don't want to mess with the factory MAF. The BBK intake is aluminum isn't it? If so, it's a heat sink. More heat build up means less power. You already have the better intake over the early years. Spend your money on gears or a cam and you'll be much happier.

ljthe2nd

Do not do any of the 3 mods you are contemplating. They will not give you any performance increase and they might possible cause your car to run worse and throw a bunch of codes. While your at it get rid of that performance chip you put in it and put the stock one back in.

If you are worried about passing NJ emissions talk to some performance shops that deal with LS1's in your area and see what they do.

Most shorty headers will pass emissions, they won't give you the performance boost that long tubes do but you should get a solid 8-12 HP out of them and I'm sure there are some performance cams out there that will allow you pass emissions.

But the bottom line is quit buying junk that is all hype and no go and go with some proven idea's and talk to shops that deal with LS1's and ask them for some references and talk to their customers and see if their happy. If they are a legit shop they won't mind giving you some references.

I also agree with changing the gears.

striper

I agree with all the negatives posted about all the mods you are contemplating. Save your money. Why did you decide not to get headers? I have long tube headers which give a boost you can feel and have no problems with NJ emission testing. After I did my install I had my car re-tuned by Doug at ECS and have had no negative issues including passing the emission testing at inspection. The positive issues are incresed power you can feel in the seat of your pants and even slightly better gas mileage. That's a mod worth the money. BTW, I installed LG street system with cats and did it myself at home.

bigboyzwtoyz

I have a 99 vert. BBK intake, 80mm throttle body, BBK shorty headers, borla exhaust, Granatili MAF and Diablo sport tune. All I can say it's a dramatic improvement over stock.

Does throw lean codes from time to time but am tweaking with the tune to eliminate. Might be the MAF sensor doing that...to soon to tell.

Also have the TPE oil sensor relocation kit (version 1) and its working great.

schpenxel

waste of money.

Bill Curlee

I know TONS of people who live in Jersy and run long tube heades without any emissions stations heartburn. Isnt Jersy a OBDII port plug in test?? You need to find a station that doesnt give a crap. There out there.

WKMCD

It's funny that the OP picked 3 itmes that are among the most well known waste of cash.

vettenuts

Um, think again. There are countless guys running around NJ with long tube headers. ECS is one of the bigger shops and last time I check they were still installing long tubes.

0331MARINE

BBK= More Heat

Granatelli- Had one for about a week and sold it.

80mm TB- Port yours

99 vett babycar

C5XTASY

striper

Dframptonot, what did you decide? As far as long tube headers are concerned, I have a friend who does state inspections where he works, and there is never a problem with them passing the OBD2 test, and I even have the rear two O2 sensors deleted out of the four stock ones. You won't have a problem when properly tuned. No codes either.

AU N EGL

None of those will do anything, but waist your money.


the LS6 intake is very good. the FAST 90 or 92 is great on an LS2 or larger displacement.

But the the LS1 or LS6 block the LS6 intake is about as good as you can get. a ported and polished LS6 intake will help increase air flow. Remember the smallest hole limits air flow. ie the intake valve diameter

a TB, YES a Fast 90, or NW90 over the stock size will help somewhat. If you can get it attached to the LS6 intake. and a MAS to match. TPIS has a LS6 intake with an TPIS Oval 90mm intake attached.

I have a TPIS 84 tb and it did flow quite a bit over stock.


and that Jet Performance Chip pure snake oil.

A plain old dyno tune for $400-$500 will do more then almost all bolt ons