It's good to know our cars still run spot on A/F with a couple/ several mods. My 350 was the same till I ran headers.

I still remember when VTEC for the integras first came out. Everyone was waiting for a way to manipulate the VTEC. It eventually happened.:tup:

I feel you though. That's pretty much my plan on tuning my Z.

I gained 20whp peak whp and anywhere from 15-25whp throughout the powerband JUST from an Uprev tune. My AFR's went from ~14.5 before tune to ~13 after tune. A 14.5:1 AF ratio is pretty lean and is not good in the long term.
and FYI, $500 includes 3 different E-tunes from Uprev.

OP, your tuner probably knows this already but make sure your ECU code has already been cracked by Uprev. If not, you'll have to do an ECU ROM dump and send the files to Uprev and wait till they crack the code. Luckily my ECU part number was already cracked so I was able to reflash my ECU instantly.

Sorry to jack thread but how the hell can you compare a 370z to a Civic SI...?
lol!
Tune benefits the car in every single aspect.
Except for voiding your warranty. lol.
You will definetly feel a difference with a tune and it's convient to have because of the 5 maps you choose from.

I wasn't comparing the car. I was comparing the results of a tune. A Hondata base map tune made a car with similar modifications perform totally different, as you can see in the video. I was asking if a tune for the 370z would result in that much of a difference to be worthy of an owner's $550+.

How can you compare the results of a tune from two different types of cars Uprev works on Z's and is good. I had it on my 350z both NA and supercharged and I have seen the difference of before and after on 2 370z's that are NA I am also about to put it on my 370z that will be boosted.

To you it might not make sense but lets be real here how much can you really say if you have no experience with it at all.

This is about my same results (A/F) I had on my 350. But only about half the HP gains. Of course my 350 wasn't the rev up model either. But I do believe the 370 compustats for mods alot better than our 350's a G35's.

What's the reasoning behind Nissan having different ECU part numbers? I could understand between base models and the Nismo.

My G35 is a VQ35HR sedan so yeah. I agree, the VHR ECU's seem to do better when it comes to bolt on mods in terms of stock tuning. DE's and HR's seem to go lean pretty quickly.

Hypertech does have a unit available for the 370z. It is called the Power Programmer. They claim:

Performance Gains
Premium Octane : + 6 HP @ 6850 rpm, + 10 Ft-Lbs @ 2450 rpm

Check it out through the link below. The unit also allows you to flash back to stock whenever you want. Some forum vendors offer this for around $350-$400.

Performance is our Passion - Hypertech

What does UpRev raise the redline to in the Z? One member said his tuner set it at 7750, another at 8000...

You have control yourself to change it or your tuner.
It comes down to a personal choice or what your tuner feels comfortable doing.

I'm assuming 8000 would be the max on the stock motor? Most tunes that I've seen on NA cars tend to raise the limiter 500 rpm. Then of course there are the Hondata's that are closer to 800 rpm increases while engaging the VTEC earlier...


Also, something that is invaluable for those with test pipes, headers, high flow cats....the tuner can disable the code from the rear O2 sensor so that you do not receive a CEL for that particular "error". For the Cali people this still wont allow you to pass those silly *** smog tests, but for those of us in non-CARB states, it makes the decision of TP vs HFC vs LTH vs shorty header much easier because you're really just talking about sound and performance rather than apprehension over CEL's.

Who is the tuner? Uprev? You can't just say stay away from Uprev as it is only as good as the tuner using it.

Wow

As far as I know he's been complaining about his car even when stock.

If you look at his previous post (which is easy to research) you will see that even in the beginning while stock he had pinging issue way before Uprev.

Maybe an ECU issue perhaps ?