Upgrade TB or Not?

[Anthony05GT]

No, I woke up to an inch of snow on the ground. I have a long, steep driveway and 295/40/18 summer tires on the stang. I was all ready too. I put the other pulley on and changed the oil Friday night. Now they are calling for a possible huge snowfall Tues/Wed. As soon as I get to JPC I'll post the video and dyno results.

 

[CandyRedGT]

I'm liking the new FRPP T-body on my car. Have to wait till spring to try it out much though......snowing again here right now........

 

[Anthony05GT]

It's snowing again tonight here. It looks like 4'' on the ground and it's still coming down hard.

 

[CandyRedGT]

We got 5-6" last night/today...more coming Sat/Sunday!!! DAMN i'm ready for spring already!!!

 

[Anthony05GT]

OK, here's the results of stock TB and L&M 62mm. On the graph, the blue lines are the stock TB and the red lines are the L&M TB. Upgrading the TB on a twin screw also allowed almost 2 more PSI over the stock TB with the same pulleys. 34 hp gain.

This next graph shows the increased boost.

 

[Cobra SS]

nice numbers

 

[rayS197]

looks good. I thought you bought the GT500 setup from JDM??

 

[Anthony05GT]

I did, but we couldn't make it work without doing a ghetto job on the install. Somebody here suggested it was going to be hard to make it work with a whipple and they were correct. I would have had to grind off some material on the compressor housing to get the TPS wiring connector to plug in and the o-ring didn't line up with the adapter plate.

Jim III at JDM was very cool about it and will allow a return. They are a class act over there as far as I'm concerned.

 

[rayS197]

Nice, just saw the other thread. good job!!

 

[CandyRedGT]

Great results!!

 

[Scott]

Excellent gains, I would say the cost of the TB was clearly well worth it.

 

[onequicktang]

but with the stock whipple manifold 14psi is about max for its eff range. So no matter how big of a tb you put on after that amount of boost gains will be minimum cause the intake cant flow anymore imho.

 

[Cobra SS]

but with the stock whipple manifold 14psi is about max for its eff range. So no matter how big of a tb you put on after that amount of boost gains will be minimum cause the intake cant flow anymore imho.

I agree, working on a fix for that

 

[JeremyH]

but with the stock whipple manifold 14psi is about max for its eff range. So no matter how big of a tb you put on after that amount of boost gains will be minimum cause the intake cant flow anymore imho.

True, but you will still pick up power with a bigger tb.