Congrats and enjoy the extra power.

 

Don't DYNO the car expecting big gains from the VARARAM.It doesn't show much if any because the car is stationary on a DYNO.Now,take it to a drag strip and there you'll see what it can do!!It really comes alive at speeds above 45-50!

 

the car is stationary, but what about that huge fan that is shooting air into the front of the car...that doesnt mimic the real-world effect at all?

 

Very hapy with my Vararam, and I agree the install is not that tough

 

NOPE.VARARAM will show next to nothing on the DYNO-IT'S not a DYNO queen,it's a real world monster!! There are dozens of threads on what it does on the track and street for both the C5 and C6.The best part is you don't have to drive around w/your hood open for cold air like one would need to do w/the other stuff out there.

 

I just installed a Vararam on my 08 Z51 and I also recently put Kooks headers on the car....car feels really strong on the highway!!

The install is kinda tricky, but finally got it in, but I noticed that its rubbing the inner hood liner and that does not make me happy.

It sits really high up and I am going to have to do some more tweaking on it, but not sure how to get it to sit lower.....any suggestions?

 

I think the reasons for doubt on the TB spacer have something to do with the differences between modern fuel injection and old-tech carburation. On a carburated motor, the carb mixes the fuel and air at the inlet to the manifold....adding a spacer under the carb (adding plenum volume) allows the air/fuel to (possibly) mix better before being distributed to the cylinders. Ever look down into an old manifold and see a grid or louver cast into the floor of the plenum? same purpose--to promote air/fuel turbulence/mixing. Fast forward to 21st century technology.....where we have fuel injectors spraying a fine mist pretty much directly onto the intake valve....what good will increasing plenum volume do when the fuel is added to the mixture downstream of the plenum? Nothing. Now the engineers who designed these things might have different explanations and I am not attempting to dispell their research....this is only a "shade tree/good 'ol boy" explanation with no scientific research to support it. But there is a good chance that this is what your tuner is thinking....besides he obviously has a dyno and has probably tested these kinds of things :o ANYWAY there are actually a few cases where the spacer did help out signifigantly on FI apps----TBI for one. But you have to remember that the location of the injectors on TBI is simillar to a carb....where increased plenum volume would aid in mixing air/fuel. So there it is my explanation is for entertainment/thought provoking purposes only....i am not attempting to start a debate or argument. so if others want to chime in on this subject....feel free, but I have nothing else to say.

Now go away, or I will taunt you a second time.....

 

JGS93GT,

Read this article, I believe it will fix your issue.
http://www.gmhightechperformance.com.../photo_29.html

Cheers!!

 

 

No issues here.. Just glad Stoplight Warrior was home Fri. night.... you know what I mean bro...

 

Well after tweaking the rubber hoses and the bracket I got the intake to sit low and clear the hood.

Thanks for the help and PMs!

 

Not a debate but there is a simplier explanation. The spacer effectively adds runner length. In the old days this would tend to increase torque at the expense of top end hp. In todays world who knows.

 

way to go. first figure it out, learn why it does what it does, determine what makes it better/worse, mod as desired.

spacers post mix (a/f) create larger voids for mass.

spacers pre mix effect airflow only.

traditionally, longer taller runners runners are preferred (the straighter the better), however, fi (fuel injection) is a slightly different story.

the runners on most fi. (fuel injected) engines only pass air.

the runners on carb'd engines, with or without spacers, pass both air and fuel.