Here are some vids of my car on the dyno...1st vid is on pump gas only and 12psi tune with dyno reading low that night and temp was set at 44 degrees F...2nd vid had retune and 5 gallons of MS109 race gas on top of 8 gallons of pump gas...
http://www.youtube.com/watch?v=ZBenJxS6gxQ
http://www.youtube.com/watch?v=mFWHoBqErXA

 

nice videos but thats alot of smoke coming out after thos pulls... hope that is just unburned fuel

 

Sounds wicked. A few questions:
What kit is it? 70rwhp for 3psi is steep!
What gear were those pulls made in?

 

4th gear pull greddy tt 20g kit...smoke was condensations it had no smell and it was about 40degrees in the garage car was running a little rich had some black smoke but the white is just from the heat of the exhaust you could see your breath in that garage...we also added about 4-5 degrees of timing to the car on the second run taking it to around 12-14 degrees of time from 5500-6800rpms you can see the dip in the power on the first graph and where we added the timing in the second graph...

 

NICE.
I love the sound of the open dumps but its f***ing annoying when its your DD.

 

sounds sweet

 

I want the Greddy 20G for mine.. maybe next year... great numbers!

 

yeah the open dumps are a little loud just for daily driving but i dont really drive it unless its nice out...i know this sounds wierd and doesnt make sense to most people but since ive got this stuff done to my car i am gettin 40-45mpg on the highway here in West Virginia i drove to columbus OH and back this weekend which is a 3 hour drive and still had over a quarter tank when i got about and hour away from home and was traveling at 75-90mph the whole way...at first i thought the gauge that shows your fuel mileage was off but as long as i'm not getting on it the car gets much better mileage...

 

well the Z make great gas mileage on the highway... Im N/A with just intake and exhaust and tune for 93 and on a full tank of gas, leaving where I live here Orlando FL. I made it to Downtown Miami and still had half a tank... you being turbo.. not really gonna burn much unless you really start boosting...

 

15psi stock block, driven hard =

 

Pretty much what I was thinking actually.

 

The car is built.. BC rods, CP pistons, L19's etc...

Very impressive for just 12-13 degrees of glow!

 

Not a stock a block. Nice OP. Can't wait to see some vids off the dyno.

 

Try doing this by math rather than "quarter tank" (i.e. fill up, drive and track miles, fill up again, divide miles driven by gallons of fuel added). Drive as far as possible to get the most accurate results, which in your case - supposedly - is over 800 miles on a single tank.

I doubt you'll compute anything near 40mpg. Turbos do not make an engine consume less fuel, even when off-throttle. I agree that when driven kindly, you can get the same mileage with turbos as an N/A, but it does not go up 2x.

 

Yeah concur. People are hard pressed to squeeze 30mpg out of their z's driving rediculously conservative... I can't get more than 27.5 out of mine without getting honked at for constantly putting the car in neutral and coasting on the highway lol.