UpRev Tune Issue for MY2013+ 370Zs
 

After reading all the relevant tuning threads and conducting my own research, I decided to get an UpRev tune. My car is not heavily modified; I was more interested in increasing the throttle response than maximizing power.

This past week Seymore4 street tuned my car with UpRev. First of all, I just want to say that if you are interested in getting a tune and you are not near a dyno tuner or not interested in having a dyno tune, then I suggest you contact him. He is excellent at tuning, extremely knowledgeable, very friendly, reliable, prompt, and fair. He is active on other forums as well, where he has a great reputation and is held in high esteem.

So with a couple of second- and third-gear pulls, Seymore4 was able to tune the timing and fuel tables just fine, but when he would alter the throttle table, the car would almost immediately throw a code and go into limp mode. He tried starting over and reflashing a couple of times, and the only time the car would drive normally was when the stock throttle table was retained. My car's ECU part number is listed in UpRev's database, so it is a known entity. With just the timing and fuel optimized, there was almost no noticeable difference in feel from stock on my particular car. I toggled back and forth from the stock map to the tuned (timing and fuel only) map quite a few times to see if I could discern any significant difference, and I really couldn't. I think the throttle tuning is vitally important when tuning our cars.

Seymore4 contacted UpRev about not being able to tune the throttle table, and they responded that they have had experiences similar to mine and thus they do not alter the throttle table for 2013 and newer 370Zs. Maybe my knowledge base is lacking, but what good is a tune if the throttle table cannot be tuned? I wonder what would have happened if I bought the tune from UpRev directly. Would they have allowed me to return this product if I reported that the car felt no different from stock? Would they have warned me ahead of time of this issue based on the model year of my car?

Anyway, Seymore4 is a man of his word. He removed UpRev from my car and gave me a full refund.

Does anybody have any other input regarding this issue? Surely someone else with a 2013+ 370Z has an UpRev tune. I can't be the first one to experience this.

My Uprev tune experience was a 5hp increase on the top end and about 10 hp in the middle. The biggest difference I could feel was shift hardness. There is less overlap and a firmer shift between gears.

I am not convinced a tune is necessary for our cars if we are just adding exhaust and intake mods.

That sucks. I have a 2014

The only thing i would tune for would be throttle response

Not true, The stock throttle tables and "lame". The gains are off tuning the throttle tables, which in turn lets you adjust timing and fuel. with Intake and just a catback I mae 298 WHP. True my tune only netted me 2 WHP over the stock file( 296 WHP) but my throttle response was greatly improved along with the shift firmness and I pick up 15+ in the mid range.

UPREV told his tuner( Very very Good tuner) that the New 2014's throttle tables are locked and cannot be adjusted.

Wow. If I understand your post correctly, the Uprev tune (mine was tuned by Uprev at Uprev), the power gain is from tuning the throttle tables and those tables are locked as of 2014. So, how will the newer cars achieve gains?

They wont unless UPREV cracks the tables, or Ecutek has cracks the tables I think

This is not promising. I am eyeing on a used 2013 G37x sedan with 23k miles one owner.
I was thinking about keeping my Uprev Tuner so I can tune it on my own, but now I am not sure if I will go with the G.

Can anyone confirm if EcuTek is able to modify the throttle tables on 2013+ MY vehicles?

Here's a tuned 15. Minimal gains as the ecu had almost a perfect tune with LTHs, cbe, ported Tb's, ported upper and lower and G3's.

They both are able to access the tables.
http://www.the370z.com/tuning/43384-...tle-uprev.html

So I didn't read that whole thread, but you are saying the op is wrong?

More interested in driveability improvements and throttle response than hp/tq gains. That's why I'm specifically asking about the throttle tables on 13+ cars as discussed in this thread.

My experience, I got a tune from Seymore4 also, good guy and tuner, and I'm pretty sure he adjusted my throttle tables. I took the car a couple of months after the tune to a dyno and told the tuner there to just fine tune the A/F timing in the dyno and leave the throttle tables alone, since Seymore4 was working just fine. My car went from 294whp with only intakes to 322 with intakes and catback. Mines a 2013...

Have to ask my tuner.

ECUTEK can adjust the throttle tables on 2013+. Here is a link to an earlier post:

http://www.the370z.com/tuning/43384-...ml#post2810157

Yup.. EcuTek can..

I adjust the throttle maps in all my tunes - and I've done several 13, 14s already

John

No, just correcting an earlier post that stated uprev was not able to change the throttle maps. The OP is having some other issues when changing the map the engine throws a code immediately.

This is an interesting post. If I read that correctly, it seems the ecu did a good job of adjusting to some serious breathing mods.

Interesting. Scott@synergy recently demonstrated that the TB's on the newer MY's are mechanically different (and may have a different electronics as well).

It seems that not only are they different, but the code needed to adjust them is still encrypted... booooo! :shakes head:

On the other hand, do the new MY's have better throttle response than the earlier MY's? Maybe they don't desperately need tweaking? Anyone driven both?

Finally, will that "Sprint Booster" piggy-back work with the newer MY's? If so, that's probably the easiest way to try and adjust it, if so desired.

Is the first run bolt on's no tune, then bolt-on's + various pnp'd goodies, followed by the previous + tune?

"Minimal gains" is quite an understatement if I'm reading that right :eek:

Just to reiterate my situation, Seymore4 tuned my car two weeks ago in person. Each time he used anything but the stock throttle table, the car almost immediately went into limp mode. He reflashed the ECU multiple times to no avail. So I drove the car for two days in a semi-tuned state (stock throttle table, but tuned fuel and timing). I was able to toggle back and forth between the stock and "tuned" maps, and I honestly could not detect any significant difference. The throttle response was obviously the same.

When informed of this issue, an UpRev rep specifically told Seymore4 that they (on their etunes) do NOT alter the throttle tables for 2013 and newer 370Zs because of the limp mode issue.

The only reason I wanted a tune is to improve the low-RPM throttle response, which would necessarily require changes to the throttle table.

I feel your pain. An EcuTek tune by a competent tuner like Visconti will solve your throttle response problem. The EcuTek tune fixed the throttle hesitation on my 2013z

As soon as I finish getting a couple more things taken care of, John @ Visconti is getting a new customer.

Your'e exactly right. That's pretty much the same conclusion I have come to after reading all the recent threads.

The throttle table does not need to be adjusted, leave it as it is, it will prevent a major case of whiplash effect. Now i have personally tuned my own Z without a dyno or any knowledge at all on how to tune and I was able to archive the throttle lag to go away and no codes popped since 2011.

How i did it;

I lowered timing on hot spots like "80" to "76" even lower on some.
Adjusted cold timing up basically copied warm timing to cold but pulled back timing till 72-74, and watched the correction, noticed that fuel was waaay too much in the beginning of warm fuel table, so i pulled it from 120 to 110 and evened out the curve for the rest 110 to 105 and so on, but left those that are near 100 alone. That fixed the idle issue i was having.

Next i adjusted the A/F ratio table this is where i started noticing power, i first adjusted the RPM table from 3200 to about 1600, and adjusted the rest accordingly by RPM between them, then i started changing the table first row of "x" and "y" are all 14.7, then second row "y" round 14.3:1 and so on, to 12.50, i know am leaning it out to burn Hot, so i installed an oil cooler.

These basic changes made my throttle respond the way i wanted.

It isnt correct i know, but its in the ECU adjustment capabilities.

I will post a pic when ill get home for ur reference.