What throttle body?

mercutio · Post by **mercutio** » Tue Apr 24, 2012 10:59 pm

lewd lude lover wrote:and there we reach the limits of N/A and enter the dark world of Forced Induction

sorry for my outburst. apologies to those i had a go at. i should leave a bad day at the door as it were.

Post by **4thgenphil** » Tue Apr 24, 2012 11:05 pm

mercutio wrote:
lewd lude lover wrote:and there we reach the limits of N/A and enter the dark world of Forced Induction

sorry for my outburst. apologies to those i had a go at. i should leave a bad day at the door as it were.

Post by **lewd lude lover** » Tue Apr 24, 2012 11:15 pm

unites all in harmony.

i like turtles too.

Ted · Post by **Ted** » Tue Apr 24, 2012 11:16 pm

lewd lude lover wrote:

unites all in harmony.

i like turtles too.

and guinness

Post by **lewd lude lover** » Tue Apr 24, 2012 11:19 pm

yes, and guiness. lovely forgetful guiness.

A1ex · Post by **A1ex** » Tue Apr 24, 2012 11:21 pm

Ok thanks folks, Rich at PAW had said that to do 270-280 bhp N/A a bigger tb would be required as part of a complete setup so dont think we would be at the limit yet but it's a good point.

I guess if the whole system CAI through was at 70mm then the air would flow in fine otherwise but if there is a pinch point this would cause an issue.

Post by **Lude-dude** » Wed Apr 25, 2012 12:13 pm

bear in mind if you ditch the FITV you will have to hold the idle yourself on cold start.

not really a problem tho

just fitted the skunk2 68mm, I shouldnt have gone for the billet one as when I got to rich he said they stick sometimes, but its been good so far.

Post by **Merlin** » Wed Apr 25, 2012 12:22 pm

There isnt a FITV on the ATR manifold as I was asking a similar question and PAW pointed out that the ATR mani doesnt have one.

Post by **Lude-dude** » Wed Apr 25, 2012 12:34 pm

you mean the ATR throttle body?

you could fit the oem throttle body to the ATR mani

but for cold idle wouldnt worry that much

judderod · Post by **judderod** » Wed Apr 25, 2012 12:40 pm

68mm is as big as you want for NA.

A1ex wrote:I guess if the whole system CAI through was at 70mm then the air would flow in fine otherwise but if there is a pinch point this would cause an issue.

A pinch at the TB is good - it causes an increase in air velocity.

Lude-dude wrote:bear in mind if you ditch the FITV you will have to hold the idle yourself on cold start.

You don't need an FITV with proper tuning. I've done without one for 2 winters now and I've never needed to use the throttle to start even at minus 8 degrees. The IACV can be tuned to sort it all out.