We will begin testing after the mile event as we want to finish up some testing with the Billet K16s. We have a set here waiting to go on

 

Word. I'm excited to hear how the 24's perform.

 

GREAT NEWS!!! I for one, can't wait to find out how they are going to turn out... I'm sitting here waiting for you guys to get this done before I do any more mods...

 

Those straight pipes are killing your performance. Put a free flowing exhaust back on and your times will improve. Just sayin...

 

get the launch sorted out and the times will improve, just sayin

an exhaust system is not the key

 

No, it's not the key but the straight pipes are hurting the K16's. I've tested both and the Miltek performs better than straight pipes while running K16/16's

 

If this were true (which I certainly do no think is the case) it would be present with all turbos, not just small ones. I find it very hard to believe that the Milltek (or any exhaust) created less back pressure than a set of straight pipes, and less back pressure is certainly the direction we want to move on a turbo car regardless of turbo size. No set up "needs" back pressure.

 

I'm just stating a fact that my car with K16/16's performed better (better by .2 tenths in the quarter mile and 60-130) with the Miltek exhaust with cats than it did with straight pipes and gutted cats.

 

Any chance of any variables changed? Something like gas , program adapted, boost or .......
It would be kind of hard to believe that straight pipe lost more power than exhaust+ cat in Turbo engine.
Todd, may you test it back to back again (with datalog/dyno)? You might find something you left on the table.

 

Oh well, you told him....let him go ahead and try it...

 

Which system was you car tuned for? I could see the dumps causing a problem with the tune, although I think you would have to look at a log to verify. He was dynotuned with the straight pipes in place though, so I would imagine he wouldn't have that issue.

 

The less backpressure on a turbo car the better. There is no way a full exhaust will make more power than a proper set of straight pipes on a turbo car, period. There had to be something else going on if the full exhaust made the car quicker.

 

Very job BeltFed congrats,good traps.

 

Do you think that the addition of straight pipes will have that much of an effect on the tune? vividracingtx remove his Miltech and installed straight pipes with cats and without cats and with NO other changes had a reduction in performance (base on Pbox times) with both staight pipe setups. He reinstalled the MIltech and picked up all his performance. We're talkng 2 -3 tenths.

 

Something else is going on for sure, that doesn't add up. Was the diameter at the straight pipe entrance the same as Miltek? Maybe for some reason the knock sensors were picking up false noise from the straight pipes. O2 sensor location, since the DME is in closed loop the A/F could have changed?
All I know is that the less backpressure behind a turbine exit the better. Strange...