Nismo ecu swap?

Jhill

When you say that though wouldn't that mean the uprev would be staying closer to Oem tables which I would imagine would be on the safer side (less advance).

Chuck33079

If you tell your tuner to stick to the oem tables, then sure. But that way you're giving up most of the gains to be had with a tune. If you leave timing alone, all you really get is an afr adjustment. That's not going to generate much power unless you've got enough mods to throw the oem ecu for a loop. But the best thing about ecutek is that it runs what you tell it to. You tell uprev what you want, and then it tries to figure out if that's what you really wanted after all.

As long as you've got a good tuner and you tell him not to go nuts, you'll be fine. These motors are stout. Guys are running 600+whp on the stock block. If it can take that, it'll be fine with a moderately aggressive NA tune. There just aren't a lot of people with popped NA motors that didn't do something really stupid.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

Jhill

Yea I just spoke with Seb and I feel a lot better about it now. Seems they actually relax the timing for 91 octane so it isn't knocking and pulling too much back out like Oem that is based on 93 octane. So that's comforting. They do tweak the vvel but I am not sure what they do to it. Waiting to hear from Rob e-mail and then decide if I go with specialty z off the shelf tune and then have it dyno tuned there in August or what Rob does on the ecutek tuning and maybe stay local.

Right now it sounds like Seb has a pretty nice deal since they have worked the traction control and everything in their MAP with ecutek. Looking like I can have a stock tune, a true tune with traction control tweak (so off = the tuned traction control like a GTR R mode), and also a tune with traction off=off so you can be stupid. Also buying the license and cable gives me access to trouble codes and data so it's like a scan tool as a bonus which I will use at some point I know (master tech for the last 11 years but left the industry this last year and now no scan tool access).

ban25

EcuTek RaceRom is a night and day difference compared to the stock VDC. The more aggressive throttle response is huge as well -- probably the biggest single difference I noticed. I made good power gains with Seb's tune on the stock engine:

ban25's Track Journal

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2017 Corvette Z06 7MT | 1LE | Stage 3 | DSCSport

Jhill

Would you say it's still safe though? I am just learning to track (group a) and last thing I want is the car to get too out of hand and put me into the tire wall. I need all the artificial help I can get right now.

JARblue

Yes. A proper tune is going to be perfectly safe. Stop worrying. What makes you think a tune is going to help or hurt you on the track? If you are really worried, just take it easy on the track until you get more seat time.

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ban25

EcuTek RaceRom is safer on the track than the stock VDC. When VDC activates, it's very heavy handed and will cut throttle for an extended period of time (2+ seconds) even in cases where the car still has grip. This is bad news on the track because it can shift the car's weight distribution. It can also come as a surprise to someone behind you, who is not expecting you to suddenly slow down without applying the brakes! At Sonoma, I had to turn VDC off because it was activating on T3A -- preventing me from setting up properly for T4 due to the activation lag -- even when I adjusted my line and reduced entry speed to keep the car as straight as possible. I suspect it's the lateral G's that trigger it in the case.

VDC also tends to eat rear brake pads, due to the amount of rear braking it tends to apply. Back when I was tracking with VDC on, I was chewing through rear brake pads twice as fast as fronts! Bottom line, VDC in the 370Z is not a performance traction control system suitable for road racing. It might be acceptable on the Altima, but not on the Z.

RaceRom is much less intrusive and is adjustable from 0-100% using the cruise control buttons and temporary gauge hijack (it displays its setting on the oil temp gauge). I'll typically start with a setting of 50% and dial it up or down from there depending upon how the car's handling. If I'm at a track I know well, like Laguna Seca or Buttonwillow, I'll turn it off entirely. On the other hand, if it's raining and wet out, I'll turn it up to 100%. At 100%, there's no wheel slip at all (except in the rain, nothing it can do about that!), yet it doesn't cut power as intrusively as VDC.

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2017 Corvette Z06 7MT | 1LE | Stage 3 | DSCSport

Jhill

Oh weird I did not know it was adjustable. From speaking with Seb I was under the impression it was a tweak he came up with to run with his MAP. So if I am understanding this right then when running his MAP for my tune I still have the option to tune the VDC independently of the MAP? Also I have only tracked once and it was leguna seca and I never felt like the car vdc was interfering but in still new however I never experienced the whole "ice mode" thing and hope to never experience it. Does the ecutek fix that?