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

[Elliott S]

So this may clear up some long ending confusion for people wondering about the JDL UEL Catless Headers and the new tune Shiv has released.

My current setup is:
JDL UEL Catless Headers
Invidia Overpipe
HKS Dual Resonated Front Pipe
Invidia N1 Catback

K&N Drop-In Filter
Mishimoto Inlet Tube w/ resonator attached

Excuse me for not having the Engine RPM attached to my datalog but I forgot to switch the settings as I had my daily driver settings on.

Quite happy with the results and other than one small spot of Knock Correction at the first big 3rd gear pull from 20 mph-60 mph, I have not seen any since.

http://www.datazap.me/u/elliott-s/ne...g=0&data=1-4-8

[Dru670]

so I just installed a catted front pipe and here are my data logs. Still learning how to interpret this info. Do you guys see anything that I should be concerned about?


http://www.datazap.me/u/dru670/ofh-t...1-2-3-5-6-9-12

[Elliott S]

Originally Posted by Dru670

so I just installed a catted front pipe and here are my data logs. Still learning how to interpret this info. Do you guys see anything that I should be concerned about?


http://www.datazap.me/u/dru670/ofh-t...1-2-3-5-6-9-12

This post is specifically regarding shiv's new OFT tunes. I cant be certain, but are you running it as well? If not, the standard "Data Logs" sub forum link is where you need to post.

[Dru670]

Originally Posted by Elliott S

This post is specifically regarding shiv's new OFT tunes. I cant be certain, but are you running it as well? If not, the standard "Data Logs" sub forum link is where you need to post.

Yes this is Shiv's latest OFH specific tune on my non-ofh uel header.

[Elliott S]

Originally Posted by Dru670

Yes this is Shiv's latest OFH specific tune on my non-ofh uel header.

Cool deal. Might want to post up which one you're running as im sure users on here would like feedback on which one it is so they can have the peace of mind about using it themselves.

[Dru670]

Originally Posted by Elliott S

Cool deal. Might want to post up which one you're running as im sure users on here would like feedback on which one it is so they can have the peace of mind about using it themselves.

I did mention it earlier on this post. I have the 1320 uel header

[Shiv@Openflash]

Originally Posted by Dru670

so I just installed a catted front pipe and here are my data logs. Still learning how to interpret this info. Do you guys see anything that I should be concerned about?


http://www.datazap.me/u/dru670/ofh-t...1-2-3-5-6-9-12

Yes, way too much knock retard (neg FLKC) above 7k RPM. Those who live in CA, AZ and NV (who only get access to 91oct) should be especially careful with these new maps. They are aggressive!

[Dru670]

Originally Posted by Shiv@Openflash

Yes, way too much knock retard (neg FLKC) above 7k RPM. Those who live in CA, AZ and NV (who only get access to 91oct) should be especially careful with these new maps. They are aggressive!

Yikes im in Nevada. I guess im flashing back to the stage 2 (non OFH specific) then.

[Dru670]

@shiv will you be releasing an updated stage 2 tune for non OFH soon?

[RedFRS4me]

Originally Posted by steve99

That should not have any effect, heaps of guys track all the time on E85 no issues.


I think you have a fault with possibly rear 02 sensor or some other issue.


when you back on petrol flash a stock tune and see if it does it.

So the o2 in the rear is the air fuel o2? My af goes rich after driving for a while and no stft like stuck on open loop. Wish i had a spare to try. Or i will just try a voltage reading check.

With the stock tune i should be getting the p0420 code correct? So if my rear o2 was bad it would throw the same code?

[RedFRS4me]

Originally Posted by Shiv@Openflash

Yes, way too much knock retard (neg FLKC) above 7k RPM. Those who live in CA, AZ and NV (who only get access to 91oct) should be especially careful with these new maps. They are aggressive!

Hey shiv, im from the nw but made the trip to cental California this weekend and definitely saw what you meant. Even though im having my own issues with being stuck in open loop at the moment i saw more knock correction and my adv multiplier drop below 1 with 91 oct in cali. Back up here in Oregon with 92 it went back to normal.

[Shiv@Openflash]

Originally Posted by Dru670

@shiv will you be releasing an updated stage 2 tune for non OFH soon?

it's impossible to do that unless I custom tune each non-OFH header on the dyno. The reason why the new Stage 2 OFH is stronger is because I developed the tune over a couple weeks in a local OFH3 equipped test car.

[steve99]

Originally Posted by RedFRS4me

So the o2 in the rear is the air fuel o2? My af goes rich after driving for a while and no stft like stuck on open loop. Wish i had a spare to try. Or i will just try a voltage reading check.

With the stock tune i should be getting the p0420 code correct? So if my rear o2 was bad it would throw the same code?

The front 02 is used as the primary sensor for fueling. however the rear o2 is used for some fuelling adjustment during cruise and to detect if cat in header is working.


The ECU compares reading from front and rear 02 sensors to work out if cat in header is working, if it detect abnormal readings it will set CEL code P0420.


your problem sounds similar to this guy who did not install rear 02


http://www.ft86club.com/forums/showp...59&postcount=9


many people have damaged their sensors using excessive force to remove or install them in new headers, best to run a thread tap through new header bungs M18 by 1.5mm pitch.


In the stage 2 tunes P0420 is disabled so you wont get it. On stock tune its enabled, so you may get it or may not

[Dru670]

Originally Posted by Shiv@Openflash

it's impossible to do that unless I custom tune each non-OFH header on the dyno. The reason why the new Stage 2 OFH is stronger is because I developed the tune over a couple weeks in a local OFH3 equipped test car.

Do you have a fix for my F00C not reading IAM and MAF voltage? I noticed when I flashed your new OFH tune my OFT was reporting the MAFv and IAM but when I reverted back to the Stage 2 UEL 91 OTS (Stg 2 UEL F00C dated 9/21/2015) I get no IAM and MAF voltage readings on the OFT. Could you pls help so I can find out if my car is running properly or not.