Ok reflash guys...
question for you.

so far I'm not going for a standalone ecu, but I'm concerned about an "off the shelf" reflash for the a/f ratio.

the only mods I have and planned to my engine are k&n filters, berk metallic hfc, JIC Y pipe, JIC spartan TI exhaust.

does anybody... technosquare, uprev... whatever... has an off the shelf reflash or some tuner here in Houston, TX to reflash my ECU (08 nismo) with a proper air fuel of 12.5/13.0 to don't blast my engine in the track days... (of course.. more power and torque will be a damn good plus)

I have seen pretty nice chart from technosquare but no A/F after the reflash..
If I send with the ECU a dyno chart with the actual A/F does that help.. or it's just a "standard" reflash for mods similar to mine, so I'll just waste my money.

 

I would expect them to change the reflash per your dyno charts if they see anything out of the ordinary. You state that they are Planned mods does this mean the dyno chart will not have these items on it?
My last dyno with the HFC and Nismo exhaust showed a great AF so you might not need the reflash just to get your AF to 13/12.5. Not saying they can not tweak your af to make it alittle better but it is not like you are running around at 11+ AF.
The one plus to the reflash is a raise in REV limit and keeping your throttles open to redline.
Track do you mean drag or auto cross? because the raise in rev limit makes a big difference on the autocross track.

 

Here was on of my first HFC runs that shows my AF. I dont see a hole lot of tuning needed on my car. There are some dips but not like my 05 Z was.

Note: This was the first run and was only to 7k

Dynojet

 

road track... or autoX... so yes.. 500 more in the rev band could help (I usually don't use the HR engine to even 7500... so keeping the TB open will help either....)

 

Well on the 3rd-4th shift I could use it. Also alows to hold a gear through a corner instead of up shifting mid corner.

 

that I agree.. a little more of powerband and rpms are useful...
but still I'd like to see the A/F of a technosquare reflash on an HR with HFC and exhaust... you know.. just to be sure.