Cobb vs UpRev

Denny McLain

As a FYI.......

Corky Bell did a Turbo Supra for me that used a Haltech system that I was quite happy with. By pure happenstance, one of the Haltech engineers was friends with the dyno shop whom sponsored me. They asked me if they could use one of my cars as the test mule to development a new engine management system which they felt would improve overall performance.

Wasn't privy to the actual hardware or software development and that doesn't matter as I wouldn't know what I was looking at anyway, but did spend every single dyno testing session with them. The short of the story is after abusing my car for a month on the dyno, driving the streets of Dallas under different load conditions and numerous tweaks.......The car did not make a single hp more than the stock ECU when tuned with OBDII LT1.edit software.

NIZMOZ

That just means they need a better tuner. UPREV can do it on the Z, Technosquare, and Cobb as well. It can happen.

__________________
SOLD: 2007 NISMO 350Z #0044 Silver Alloy
New DD: 2010 Titan Pro4X CC

1slow370

I know a few guys with FI around here putting down good numbers (400-600) on their 350's and when their UTEC's broke they went Haltec and all of them were quite happy with it. Hell those things have built in two step rev limiters and no hiccups with the rest of the car. When they get tired of tuning equipment that doesn't get the job done they go to haltech. These reflash utilities are only good for mild N/A builds and while you can screw around with tables for weeks to run mild boost, in the end you end up getting something else.

westpak

you are comparing apples and oranges, the Utec is not the best for boosted cars, I would pick Osiris over a Utec for any application on a 350Z, NA or boosted. We have done some boosted 350Z's including an HR with Osiris and they run perfect.

__________________

Denny McLain

Not sure if you got the point.

LT1.edit is a tuning program for LTx motor F-bodies and Corvettes that tweaks the stock ECU. In this case it was a 97 SS Camaro with extensive modifications. The stock ECU was originally tuned at Dynotech using the LT1.edit and even with engineering tuning support from Haltech, they could not improve on the stock computers ability to control the engine and produce horsepower. Bob Norwood at that time used the same dyno and popped in for a couple of sessions.

Norwood Autocraft, Inc. - Dallas, TX/Fast Cars

Think you'd be very hard pressed to find a better tuner.

Guessing a dozen dyno sessions at least looking for the holy grail. One night alone we started about midnight and stopped about 5:30 am going through two tanks of gas driving the hwys' around Dallas at different load levels to fine tweak the tune.

Not saying anything bad at all about Haltech except that the stock ECU on certain cars can be very hard to improve upon. Not a slam dunk by any means and I seem to recall the factory has a few engineers themselves with pretty deep pockets for R&D.