2017 86, knocked out cat in OEM header.

90° mini cat ($40AU fleabay jobbie) on rear O2 sensor, no codes after 200 km of hwy and general thrashing.

Gains, losses, don't know for sure, seems better in the midrange....seems to rev much more freely.......it is better than with the cat, how much??????? F knows.

Has header back X Force exhaust, OEM overpipe.

Cold start is obnoxious loud.

Settles down on idle.

Sounds great at full noise.

Tune will fix cold start.

Should have time for a tune in a month or two.

Until then I'm an annoying prick in the mornings.

Being possibly an idiot, can anyone tell me if running a jdl catted header with the OFT e85 tune will cause any problems? I want to run this setup as I'm not worried about going full flex fuel cuz I have like 5 e85 stations by my house and I want to keep the catted header to keep noise level down. I keep looking and dont see any definitive answers or I've missed it somewhere.

will be fine

the newer oft V4 tunes the stage 2 tune is for catted header and stage 2 plus for catless.

oft E85 tune works with ethanol contents from about 60-90%, unfortunatly some "E85" in USA can be as low as 50% that would cause issues

Thanks for the info. So if the e85 in my area is of low quality I should avoid running the e85 tune with a catted header? I'm in SoCal so I wonder if the e85 out here is crap with all the hate on cars we get out here.

yes you probably need to test it you can buy low cost test kits on ebay


if its below 60% ethanol you will need to mod tune or just not use E85 tune




something like this


https://www.ebay.com.au/itm/REV-X-Su...MKj:rk:15:pf:0

Beautiful thanks for the info!

request : Catless OEM Header + FP, stock everything else Dyno numbers and sound clip, please.

Can I ask a few newb questions on tuning?
All the info I learned from tuning has come from this site, but their are a few things I am not clear about. Now I have a 14 BRZ, with an axle back, drop in filter, and a Perrin intake tube. That is considered stock, so I would need the ECUTEK 1 tune correct?

http://www.ft86speedfactory.com/ecut...l#.XE1REy2ZNQI

I have nothing, so I would need the ECUTEK, the cable, and the license, I am just confused on what exactly the license is, and what do I do with it. I know its not s literal license but still. I am not sure what its benefit is for the installation.

After purchasing this what happens if I do more mods and I want to do a stage 2 tune? Would I need to buy it again? Is there a way to just add it to the tablet I will have already owned?

And last question once I have everything, the tune is fairly simple to do right? You just plug it in, start the car on ACC II (engine off) and follow the directions right? Or am I wrong? Thanks in advance for all answers.

Of course you can ask questions, you came to the right place - :thumbsup:

However, you got a hold of the wrong guy - I know nothing about "tuning" these cars - :(

But, if I understand correctly, the "mods" you mentioned above, do not require the engine be tuned with an aftermarket tune.

Now, folks will come along shortly to help you out - ;)


humfrz

Bruh........YouTube.

Just do it yourself

Another reason why it's not worth modding in Cali

To this date. The 2.076 are the best oft tunes.

Unless you have a 2017 or newer car :-)