EcuTek Tuned Quickly wagging tail out?

[HarryBo]

2024 Nismo Z w AMS Heat Exchanger, Intakes, Intercoolers, Catted downpipes, and custom AMS EcuTek tune and Michelin Pilot Sports, recently back end coming out to the right more easily on hard throttle. 1st and 2nd gear pulls were always crazy, 3rd anything under 80 kph, gotta be careful, but now even 1/2 to 3/4 throttle, that damn rear end wants to pull and break out to the right (passenger side). Now even 4th gear i have to watch. Tires have less than 5,000 km on them. Road temps were a bit cooler, but wow!

Any thoughts?

 

[ZULU-1]

I presume that you have not modified wheel fitment (spacers; increased/decreased wheel offset; tire size; etc....)

Try weighing each tire quadrant for significant center of gravity changes (added bolt-on items like the HE, Intakes, Inter-C, and down pipes) ...check for a heavier nose/light rear-end condition. Get CG results including driver station weight... specially when doing the driver's side. Also, check what effect... if any, tire pressure and fuel level variations may have on traction. and obviously, watch your steering alignment and control technique. Also... when all else fails, try checking alignment including proper camber....

Good luck!

 

[thesilverbullet]

2024 Nismo Z w AMS Heat Exchanger, Intakes, Intercoolers, Catted downpipes, and custom AMS EcuTek tune and Michelin Pilot Sports, recently back end coming out to the right more easily on hard throttle. 1st and 2nd gear pulls were always crazy, 3rd anything under 80 kph, gotta be careful, but now even 1/2 to 3/4 throttle, that damn rear end wants to pull and break out to the right (passenger side). Now even 4th gear i have to watch. Tires have less than 5,000 km on them. Road temps were a bit cooler, but wow!

Any thoughts?

Have you tried the low boost map? My tuner offered me a low boost tune - i asked why? He said i would not be able to drive the car in the rain on the high boost tune - lol

 

[KrackaC8]

I had RaceBox dial back my throttle sensitivity in lower RPMs to ensure smooth drivability.

 

[RHE2026]

I had RaceBox dial back my throttle sensitivity in lower RPMs to ensure smooth drivability.

I really like Race Box as a possible future tune. I definitely wouldn’t want it to be overly done because of driveability reasons. What hp gains did you increase it to for it to be dialed back a little?

 

[KrackaC8]

I really like Race Box as a possible future tune. I definitely wouldn’t want it to be overly done because of driveability reasons. What hp gains did you increase it to for it to be dialed back a little?

 

[jacksonmagnet]

Street tune > Dyno tune

 

[KrackaC8]

Street tune > Dyno tune

Respectfully disagree.

 

[RHE2026]

That is a significant gains. Do you feel it is dialed in just right now that throttle response was backed off slightly? I was wondering are you able to flash the ecu back to factory if I ever needed to? Thx

 

[KrackaC8]

That is a significant gains. Do you feel it is dialed in just right now that throttle response was backed off slightly? I was wondering are you able to flash the ecu back to factory if I ever needed to? Thx

Yeah, we adjusted the throttle response a few times to get it to where I wanted it. I can easily flash back to stock with the phone app.

 

[RHE2026]

Yeah, we adjusted the throttle response a few times to get it to where I wanted it. I can easily flash back to stock with the phone app.

Okay now I am definitely leaning towards Race Box and it sounds like they have a good customer support team which is extremely important to me. I would be able to go from my stock setup with only K&N drop in air filters put on so far?

 

[jacksonmagnet]

Respectfully disagree.

Would you like to compare data on the ecutek performance analyzer

 

[KrackaC8]

Would you like to compare data on the ecutek performance analyzer

I'm good, thanks. I've been dyno-tuning cars for 25 years, along with street and remote tuning my fair share of cars for both myself and others across multiple platforms.

 

[KrackaC8]

Okay now I am definitely leaning towards Race Box and it sounds like they have a good customer support team which is extremely important to me. I would be able to go from my stock setup with only K&N drop in air filters put on so far?

Their crew was great to work with (and I've worked with a lot). The stock tune is perfectly capable of running with K&N drop-ins so it would be no concern switching back & forth.

 

[RHE2026]

Well personally I really like the upgrades you have listed on your car. It must handle and sound great. Is your 23 considered the prototype model? I don’t know much about that yellow prototype and I didn’t see the bronze Rays on yours so I wasn’t sure. How many were made? I like the contrast between the black top with that color looks excellent.