Superchargers for the 370Z?

t-ray · 05-11-2009, 12:35 PM

The prior 5ats were finicky. Some guys could hold +100hp/tq of boost for a couple years, and other guys would need valvebody work in a matter of weeks.

Give the 7at some time.

Lug · 05-12-2009, 11:58 AM

Quote:

Originally Posted by t-ray

The prior 5ats were finicky. Some guys could hold +100hp/tq of boost for a couple years, and other guys would need valvebody work in a matter of weeks.

Give the 7at some time.

Another problem was the shift speed on the old 5AT was so slow that the engine would overrev during the shift and hit the rev limiter on almost any FI application on the transmission (see some threads on it at my350z). You had to get a valve body upgrade (at about 1000 bucks) and reflash the rev limit higher to even start using that tranny and it was still weak. The new 7AT seems to be much better with faster shift speeds but it's kind of a wait and see. This tranny holds 390 hp on the FX45 w/o any problems and I assume it's gonna be somewhat over engineered.

wstar · 05-12-2009, 04:03 PM

Quote:

Originally Posted by Lug

Another problem was the shift speed on the old 5AT was so slow that the engine would overrev during the shift and hit the rev limiter on almost any FI application on the transmission (see some threads on it at my350z). You had to get a valve body upgrade (at about 1000 bucks) and reflash the rev limit higher to even start using that tranny and it was still weak. The new 7AT seems to be much better with faster shift speeds but it's kind of a wait and see. This tranny holds 390 hp on the FX45 w/o any problems and I assume it's gonna be somewhat over engineered.

The rev limit thing may well be an issue with FI with our 7AT too. The overrev is tiny and barely noticeable, mostly on 1-2, but you can tell it's on the verge of not reacting quickly enough. Right now the main limitation is my reaction time though. You have to learn to click a little bit before you want the shift to occur, so you don't bump the redline before the 7AT even starts the actual shift. I'm getting better at it every day, but clicking at exactly the right moment on the 1-2 and 2-3 shifts during WOT accel is still a little challenging.

LiquidZ · 05-13-2009, 01:16 PM

Quote:

Originally Posted by wstar

The rev limit thing may well be an issue with FI with our 7AT too. The overrev is tiny and barely noticeable, mostly on 1-2, but you can tell it's on the verge of not reacting quickly enough. Right now the main limitation is my reaction time though. You have to learn to click a little bit before you want the shift to occur, so you don't bump the redline before the 7AT even starts the actual shift. I'm getting better at it every day, but clicking at exactly the right moment on the 1-2 and 2-3 shifts during WOT accel is still a little challenging.

A little off topic, but I wish I could have driven a 7AT. Nissan seems to have done an excellent job with it and it sounds like a blast to drive.

Diversion · 05-13-2009, 03:37 PM

Quote:

Originally Posted by LiquidZ

A little off topic, but I wish I could have driven a 7AT. Nissan seems to have done an excellent job with it and it sounds like a blast to drive.

First 370 I drove was 7AT... they are fun.. but I just can't get over the disconnected feel... but it was a breeze to drive fast without worrying about poor shifts!

Phimosis · 05-16-2009, 02:00 PM

I just went to tirerack.com, the major sponsor of "One Lap of America" and they have the "final results" of the 2009 One Lap, dated May 9, 2009. No where did I see a 370z listed.

Did Stillen pull out? Could they not get the car ready in time? Did it blow up and DNF? Am I looking at results for a difference race than what I thought they were entering?

Need more go faster now!

05-11-2009, 12:35 PM	#1 (permalink)
t-ray Base Member Join Date: Apr 2009 Location: bham al Posts: 91 Drives: 05 g sedan 6mt Rep Power: 18	The prior 5ats were finicky. Some guys could hold +100hp/tq of boost for a couple years, and other guys would need valvebody work in a matter of weeks. Give the 7at some time.

05-16-2009, 02:00 PM	#6 (permalink)
Phimosis Enthusiast Member Join Date: May 2009 Location: Oildale, CA Posts: 412 Drives: 2013 911 4S Rep Power: 418	I just went to tirerack.com, the major sponsor of "One Lap of America" and they have the "final results" of the 2009 One Lap, dated May 9, 2009. No where did I see a 370z listed. Did Stillen pull out? Could they not get the car ready in time? Did it blow up and DNF? Am I looking at results for a difference race than what I thought they were entering? Need more go faster now!