UpRev Tune Issue for MY2013+ 370Zs

NoHyperbole

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.

jrb55gh

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

NoHyperbole

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

2011 Nismo#91

They both are able to access the tables.
Smooth Throttle for UpRev

Stj553

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

2011 Nismo#91

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.

jrb55gh

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

Smooth Throttle for UpRev

visconti

Yup.. EcuTek can..

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

John

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MyZ4U2C

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

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DOOMMONKEY777

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.

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