New Stage 2 UEL (91-93 and E85) OTS tune files

[DarkSunrise]

Originally Posted by solidONE

That does look better in terms of knock. Even with the higher oil temps.

For myself, and I'm not 100% sure what's "better", I let the computer do its thing dialing back the IAM and building it back up while I'm running on track. I also haven't been running an oil cooler so I'm running a lot hotter and getting much more knock correction than you are. I never bothered to try for a pure "track tune". I'll dial my ignition advance so there's little to no knock correction at temps higher than normal (not quite as high as what i'd see at the track) and call it a day. My IAM will fluctuate from as low as .85 to 1.0 on a track day, and run solid 1.0 with minimal FLKC otherwise. I'm pretty happy with that.

Yeah funny thing - I didn't actually set out to build a track tune, but it's going down that path isn't it? I figure since I have my logs from my hottest track days, why not build a tune that's as safe as I can get it.

For my latest tweaked v2.076 map, I basically took the log you just saw and:

1) Took out 0.5 x FLKC values from base timing B at loads above 1.00 g/rev, ignoring all FLKC under -0.69.

2) Threw in slightly more aggressive IAT timing comp.

3) Added a little coolant-based timing comp.

4) Leaned out the commanded AFR a little. I know this one is counterintuitive, but I was pegging the o2 sensor rich (11.25) on some of my logs from last year.

If this gets me track logs with FLKC and KC at -0.69 or below (and AFR holding ~12 to redline), I'll be pretty happy.

[DarkSunrise]

Originally Posted by DocWalt

I have my logs from last year on track (cooler weather though) with a tweaked 2.073 (reduced timing a little down low in the range that you can see the knock correction, MAF scaled, and that's about it)

I essentially never saw knock correction at high RPM. Just lift throttle (false knock IMO) and sometimes when getting on the gas quickly)

http://datazap.me/u/docwalt/10-24-15...log=0&data=1-5

http://datazap.me/u/docwalt/10-25-15...log=0&data=1-5

Interesting comparing logs with you. Out of curiosity, why not record FLKC as well?

[DocWalt]

Originally Posted by DarkSunrise

Interesting comparing logs with you. Out of curiosity, why not record FLKC as well?

Honestly, I don't remember not recording FLKC... Considering I wasn't doing any scaling I should have been recording FLKC. I'll record some logs at Putnam Park in a week and a half, it's supposed to be over 90 degrees out there.

[solidONE]

Originally Posted by DarkSunrise

Yeah funny thing - I didn't actually set out to build a track tune, but it's going down that path isn't it? I figure since I have my logs from my hottest track days, why not build a tune that's as safe as I can get it.

For my latest tweaked v2.076 map, I basically took the log you just saw and:

1) Took out 0.5 x FLKC values from base timing B at loads above 1.00 g/rev, ignoring all FLKC under -0.69.

2) Threw in slightly more aggressive IAT timing comp.

3) Added a little coolant-based timing comp.

4) Leaned out the commanded AFR a little. I know this one is counterintuitive, but I was pegging the o2 sensor rich (11.25) on some of my logs from last year.

If this gets me track logs with FLKC and KC at -0.69 or below (and AFR holding ~12 to redline), I'll be pretty happy.

sound like you have a pretty good handle on it. I'm sure you already know of the tradeoffs you're making having your ignition advance tables set as conservatively as you have. Though it would be pretty awesome if you can get all the compensation tables dialed in so that you'd have max power (max ignition advance, perfect afrs, etc.) under all situations across the entire range of temperatures and loads along with minimal knock corrections for a given set up. At least we try to get as close to that level as we can without wasting too much time staring at logs, flashing then reflashing the ECU.

Another thing to consider between the 2 OTS tunes is the cam timing, though you'd probably have to throw it on a dyno to really see what's what.

[DarkSunrise]

Originally Posted by solidONE

At least we try to get as close to that level as we can without wasting too much time staring at logs, flashing then reflashing the ECU.

Ah yes, chasing the dream

Originally Posted by solidONE

Another thing to consider between the 2 OTS tunes is the cam timing, though you'd probably have to throw it on a dyno to really see what's what.

Yeah I was wondering about that too. I noticed that the intake cam timing in the v2.076 OTS map is essentially the same as the custom JDL UEL intake cam timing Shiv released. The exhaust cam timing is different, but that could be because the JDL UEL tune was developed using E85. Like you said, probably need a dyno to figure out what's ideal.

[solidONE]

Originally Posted by DarkSunrise

Ah yes, chasing the dream



Yeah I was wondering about that too. I noticed that the intake cam timing in the v2.076 OTS map is essentially the same as the custom JDL UEL intake cam timing Shiv released. The exhaust cam timing is different, but that could be because the JDL UEL tune was developed using E85. Like you said, probably need a dyno to figure out what's ideal.

Keep me updated. I'd like to know if you manage to get your calibrations to work they way you want. Hopefully Shiv doesnt mind this threadjack with all this non-OFH related stuff. OFT FTW? haha

[Myv]

Just wondering if anyone is using this tune with FT86 SpeedFactory Catted UEL Header?

[G-awesome]

Originally Posted by Myv

Just wondering if anyone is using this tune with FT86 SpeedFactory Catted UEL Header?

The OFH tune is aggressive for a catted UEL header. I have the JDL one and I've done a bunch of testing on it as well as the stage 2 oft. The stage 2 oft will work but it'll knock a bit around mid to high rpm. You will have to datalog and test to remove timing at the high knock areas. Best to stick with the stage 1 if you don't want to do some additional tweaking to the oft stg 2 tune.

[Myv]

Originally Posted by G-awesome

The OFH tune is aggressive for a catted UEL header. I have the JDL one and I've done a bunch of testing on it as well as the stage 2 oft. The stage 2 oft will work but it'll knock a bit around mid to high rpm. You will have to datalog and test to remove timing at the high knock areas. Best to stick with the stage 1 if you don't want to do some additional tweaking to the oft stg 2 tune.

Thanks I'll probably give the OTS Stage 2 a try on 94 gas and do some logging.

[K_Gork]

I'm running that setup, haven't had any issues

[Mr.Impreza]

Originally Posted by Myv

Thanks I'll probably give the OTS Stage 2 a try on 94 gas and do some logging.

You could pay $200.00 extra and get the custom tune package from OFT. That way they will do a custom tune for your specific parts on the car

[Sam.Vera]

Anyone try the OFH2 tune with catless even-length headers? I have 91 fuel only in my area, but am going to be adding NOS branded octane booster with every tank.

[EffaressNOOB]

The following is a link of 3 datalogs (1 CL and 2 OL) with Stage 2 UEL E85 with a Perrin Inlet Hose, K&N Drop In, Moded Snorkel, OFH, Invidia N1 Catback:


http://datazap.me/u/taylorshift/log-...0?log=0&data=1




Below is with Stage 2 UEL E85, Perrin 3" BigMAF CAI, Perrin Inlet Hose, OFH, Invidia N1 Catback:


http://datazap.me/u/taylorshift/oft-...l?log=0&data=1


I can't log mafV or IAM with my CALid of F00C, so I had to remove the Perrin 3" CAI.
Can someone tell me if there's any knock on my current setup? (top link)

[smg1138]

So, does the Stage 2 OFH (v1.01) tune play nice with the CATLESS JDL UEL header or not? I haven't seen a clear answer yet, but I'm sure I could have missed something. To be fair though, there are 45 pages to sort through now.