SlickVert

iTrader: (5)

Fast 90 Vs TPIS oval 90 LS6
Does anyone have and info on comparing rwhp and rwtq or track times of the two intakes on a stock cubes ls1or ls6 motor?

What one do think will make better ET on stock cubes?

speedracer5532

iTrader: (8)

Does anyone have real results of the difference between the Fast 90 vs the TPIS oval 90 LS6 on a heads/cam 346 engine? TPIS claims more low end torque vs the Fast 90 and about the same power in the upper rpm range vs the Fast 90.

SilverGhost

iTrader: (53)

moving to external

LSUxBlake

iTrader: (3)

Both of them move a ton of air, I would seriously doubt you could find any notable difference in performance between them. I went with TPIS strictly because of the problems I've heard about with FAST.

speedracer5532

iTrader: (8)

But you are using the TPIS 90mm TB on the 90mm Fast intake not the TPIS mod to the LS6 intake with the oval TPIS TB correct?

LSUxBlake

iTrader: (3)

Yes, I'm using TPIS on the FAST 90 intake. I've heard some iffy things about the LS2 intake, I think its mainly a quality issue that is fixed if you get some areas in it cleaned up. Jason did flow both of them and said the numbers were pretty damn close though.

J-Rod

I tested both on a max effort H/C car. The Fast 90 made more HP than the TPIS up top (around 10HP up top).

speedracer5532

iTrader: (8)

J-Rod, how did the Fast 90 intake compare with the TPIS Oval LS6 on low end torque? Which intake do you think will give the quickest ET?

J-Rod

They were both the same as an Ls6 until you go to the upper RPMs, and then they both pull away. You gave up nothing on the bottom with a FAST.

The FAST was ~+10 on HP and TQ over the TPIS modified LS6 intake....