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08-21-2013
I'm having what's basically an in car tune and I was wondering how big of a difference is 93 gonna make on the L36 once the timing is set up for it? I have a mildly ported stock front manifold. A ported lower intake manifold and an FWI.
What are guys' experiences? Also how about fuel economy?
Thanks
*EDIT* Also, is it possible to do a CASE learn with HPT?
08-21-2013
Yes a case learn can be done with HPT.
93 is better than 87 for helping with KR. You fuel mileage will not really change by using a higher grade fuel.
08-21-2013
What about like a butt dyno difference between the two?
08-21-2013
Octane doesn't increase HP. Octane is only a knock preventer.
08-21-2013
You can make more power up to 27* of timing.
After that, run lower and lower octane. It'll apparently drive better.
Look at the ethanol content in your fuel rather than the octane rating.
And a NA tune is pointless unless you're unhappy with the transmission settings.
08-21-2013
I got a 91 incar tune from overkill and I felt way more from the tune then any other mods I have done so far.
08-22-2013
Unfortunately you won't gain too much power with a 93 octane tune on the L36. Maybe 5-10whp though.Originally Posted by nos4blood70
The tune would be more effective at changing shift points/settings and bumping cruise timing for slightly better mileage.
Also deleting any codes you may not need anymore.
Yes HPT does case learns, and so does DHP.
08-22-2013
Thanks for the advice guys. I'll update you once stuff goes down.
12-03-2013
So how do you like the tune?
12-05-2013
When I was NA I did both a 87 and 93 tune. The engine did not respond to additional timing at all. My DOHC LQ1 loved 93 and I was able to add lots more timing with it. My 14.9 track time was on 87! I also had intake, HV3, and headers. Just stick to 87 and save the $3-5 per fill up towards other mods.
12-05-2013
To the average person there isn't much of a difference. I feel that it pulls a little harder in the mid range. Will said he was able to add a couple degrees on the 93. Whether there is a true difference or it is just my butt dyno, I guess I'll never know. I'm currently running on the 87 but I can switch at any time as long as I have my laptop(which is almost always.) NA is cool and all and I guess for an NA she boogies pretty good considering it's an H-body. But I purchased a turbo kit a couple weeks ago. So that's happening this Spring most likely.
12-08-2013
Righton I love my overkill tune.
Goodluck on turbo
12-08-2013
Thanks. Can't wait for the trollz. I'm gonna try and self tune the turbo set up. Just going for low boost until I can build the trans over summer sometime.
But to conclude. Most people say NA tunes aren't worth it. I don't know. Overkill did an amazing job for me. Even on 87 it is spunkier than it used to be. Gets about 2 MPGs more. And the trans is a new animal. So much smoother and more refined feel. I'd say go for it, if anyone were asking me.
12-09-2013
out of all my mods, the incar tune is what i noticed most. headers secondly
:4'' HAI\L67 HVTB\HV3\ER Rockers\WP underdrive pulley\Headers\cat delete\91 octane overkill incar tune.3.69 gears, Trans go shift kit.
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