ViperT4

iTrader: (1)

I'm wondering which intake manifold would be best for my goat. I have an 04 M6 with a K&N intake and Magnaflow catback. I'd be getting it at the same time as long tubes (most likely Kooks) w/ high flow cats and a dyno tune soon after. That would probably be the extent of my mods for the foreseeable future. I think the general consensus is that the Fast 102mm is the best/nets the most gain, but I'd really like to keep it to around $500, and the Fast units are about twice that much. Right now I'm thinking of going with the BBK SSI piece. Does anyone here have any experience with it?

Also, does a new intake manifold essentially require a throttle body upgrade to see major increases or could I leave that alone? Thanks for your help.

gconnoyer

iTrader: (1)

If you're on a budget, check out completestreetperformance.com. They do a ported intake and TB combo for less than what you're looking to spend.

Them. or google Fasterproms same deal as CSP

Summerwolf

iTrader: (3)

Nobody ports the LS6 manifold.

The only way to gain with the LS6 on a tight budget is the TPIS mod and a matching throttle body.

gconnoyer

iTrader: (1)

my bad, missed the part about it being an LS1

zeth

What is the TPIS Mod

JustAnotherLS2

LS6 manifold with 90mm(LS2 style) opening.

JustAnotherLS2

Its not worth the money, IMO. I believe the price without a core is 699, IIRC. You can get a used FAST with that. Actually you can almost get a new FAST with that as well. I say FAST or go home.

ViperT4

iTrader: (1)

Thanks for all your replies. For the TPIS mod, if it already come with the LS6 manifold all I'd have to do is get a new TB or port the stock one right? Or am I missing something.

JustAnotherLS2

No need to port or change the TB. A stock LS2 throttle body will mount up to that with no fab work or modding. The TPIS Intake snout(TB plenum) is 90 mm which is exactly the size of a stock LS2 TB. So the only dfference in a ported LS2 TB on the TPIS is about 300$ missing from your wallet, unless you get the the TPIS snout ported, which I'm not sure if its possible or beneficial. I say save your money and dont port the the TB. Gains will be minimal at best.

nmcqueen469

iTrader: (24)

Don't waste your money on an intake at this point in the game. It doesn't represent a restriction in your all-but-stock motor, especially since you have an 04 with the LS6 manifold. Your cam/heads are the things that are holding you back right now.

A cam swap would suit you much better. Then heads. Then intake manifold. Then clutch. Then spray. Than rear-end parts. Then......,.

ViperT4

iTrader: (1)

Yeah, that's the way I'm going to go. I thought a cam swap would be much more involved than it is and I wanted to keep it simple cause it's my daily. But a mild cam won't be bad and with headers and a tune I should be looking at about the 60hp+ bump I was looking for.

JustAnotherLS2

A lot of people DD Torquer2's. The tune has A LOT to do with drivabilty....Just syain'

JustAnotherLS2

You can even opt for a TSP 224r.

ViperT4

iTrader: (1)

How is the torque with that cam? I don't want to sacrifice a bunch of low end torque to make top end power. And do you (or anyone) know anything about TPiS and their cams? Their ZL9 seems like the best performance/$$$.

george g

iTrader: (12)

If your looking for a good combo check out my sig.My horsepower and torque should be a little higher than listed,had wrong pushrods at the time and now have that fixed but no new numbers.