This is at like 6000rpm, they are pretty odd!

 

I know this... i was making fun of the maybe intentional omission of "full" before boost.

You guys ruin everything.

 

oh.

 

Which is exactly what we had to do with the greddy setup on the 1.6 when we got the car. After changing the intake piping and the entire exhaust from the head back to dumping right after the drivers seat, we only had to floor 2/3 of the way through the corner. Still sucked. It's fixed now though.

 

Yes, the wrong size turbo or issues with the system will cause lag. The main reason for the diesels lag as I mentioned. Most diesels will get more power/torque and most likely better fuel milage just upgrading exhaust to a bigger/free-flowing system. Not sure what the restrictions are that makes the car makers put crappy systems on. Most likely noise.

 

Had massive free flowing exhaust on my truck. Laaaaaaaaaged anyway. Unless I could brake to build boost, I would always loose the jump or hole shot........and then smile as I powered past my competitor.

 

I'm going to be at Cozzolino Motorsports (SE Indianapolis) around noon Saturday to dyno the car. Need to make sure I am not running too much boost My goal at this point is to make the most power I can while not going more than around 230 to 240 torque at the wheels. According to "virtual dyno" I am there... but I need a real dynojet to back that up before I trust it.

Keith

PS: Dynoing in 5th just seams weird!

 

This is off the line?

 

Or from a roll. Which was lag.

 

boost threshold hahaha

 

Some of the old Chrysler K-cars were really unresponsive with their old T3 turbos. A buddy had a little convertible that you could stomp the throttle and have time to say "wait for it" before it would make power and torque steer you towards the ditch!

 

Well at least the K-cars you could disconnect the wastegate and make some few infinite-PSI runs down the track! K-vans are nice sleepers haha

 

Having taken a ride in Ben's car this inspired me to do a highway data log for lag documentation. On my GT2860R doing a steady 80 mph on the highway in 6th gear (about 4300 RPM, well above boost threshold) from going WOT to boost hitting 9.5 psi was .366 seconds, (this is where my wastegate starts to open) and another 3.44 seconds to hit set pressure of 11.5 psi at .73 seconds after going WOT... but that is relying on boost creep to get from 9.5 psi to 11.5 psi.

I will have dyno sheets up in my build thread soon, just have to re-size and post them Then it is off to the 1/4 mile track Sunday.

Keith