WOW those are awesome numbers. Im lookin to get the Vortech supercharger myself. I did not know those could put down that much power! Badass man

 

That SloeTruk and Bryan are one in the same!

Not yet. Last time I was at the track the tune had gotten out of whack from the cat/no-cat situation. I was running around 360hp then and turned a best of 13.5@108. Haven't had a chance to get back there with the new tune. I'm not expecting incredible things, tho. I'm not the best drag racer and have not yet figured out a good, consistent launch technique. I'll post new numbers after I go again, tho.

Well, I'm not sure I agree with Sharif's estimates of the fuel pressure. There is no fuel pressure gauge on the line so anything posted is a guess. The bottom line is it is most certainly higher than it should be and will be addressed when I can afford a new return fuel system, polished fuel rails, etc, etc.

 

I've checked it on another customer's car...with a fuel pressure gauge. between 100-120psi.

 

It's been a few weeks since the re-tune and I thought I'd give everyone a quick update.

The car is still running great. In fact, with the cooler weather it feels even stronger than it did the last time I left CPRacing (as it probably should). No issues at all and I can't help but smile each time I drive it now. Kudos again to CPRacing (Eric & Ralph especially) for doing such a great job on my Z!!!!

I've gotten messages about fuel economy in the past. With the new tune, I'm averaging 22mpg. On roadtrips, I've seen as high as 25mpg and around town it seems to be more like 18mpg. So, given the amount of power I'm pushing fuel economy is pretty good. I actually think its better than it was when I was stock, IIRC.

Still no updates on dragstrip runs. Haven't had a chance to get to a strip since the retune. However, it does great on mountain twisties. You can see a 4-min clip of a 'relaxed' Tail of the Dragon downhill run on my Wiki page. This video was captured during ZDayZ Fall Fling. I hope to have a better, edited version with more footage (especially of my much more aggressive uphill pass) in the coming weeks. Here's the link... because of this sites filters, you'll need to cut and paste the link. It takes a few seconds for the video to load and start playing...

http://www.350z-tech.com/zwiki/User:Mcduck

Still planning winter upgrades, but most likely the fuel system and Quaiffe LSD are next on the list.

 

Might have been mine. I think it was Eric that told me that a crude calculation to figure out your fuel pressure is to take the stock fuel pressure (~52psi) + 8 * boost level = total fuel pressure at a given boost level.

For 9.5psi it would be 52+(8*9.5) = 52+76 = 128psi at redline.

Also, would changing out the entire fuel system require a re-tune? I'm trying to plan a trip at the first part of next year for a big Z/G meet and might be making another trip by CP Racing while I'm up there. I may want to plan a few more mods and another tune during that timeframe.

 

new fuel system = retune

 

Thank you kind oil cap salesman.

 

hehe glad it has a good home