Is this running toO lean?
#4
Slowest Progress Ever
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Surely.
Your mechanic is an idiot and should be working at Subway. I say this, because he can't give good advice on AFR's, so I assume he can't fix a car right either. Maybe he can fix a sandwich?
Go back and adjust. Post a screen shot of your fuel table and we will tell you what to do.
#5
Former Vendor
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Your tuner is a hack and your mechanic is an idiot. Chargeback the session on your CC, never go back there and don't go WOT until you get it retuned by someone who knows what they are doing.
I like how I agonize over 0.1-0.2 AFR points on cars I tune, and other tuners get away with **** like this. Sigh.
I like how I agonize over 0.1-0.2 AFR points on cars I tune, and other tuners get away with **** like this. Sigh.
#6
Thanks for the opinion guys. The car was built by a different person which was the one who tuned it the way it sits. I asked this shop to run it on the dyno to see if the car had a "safe tune" to drive it on the weekends. The shop has nothing to do with the tune currently on the car. I guess I have some homework to do. Thanks again.
#7
try to get around 12 (AFR) at WOT.
11,5 - 12,0 is allways a good area for turbo cars. Subarus for example are factory richer - but lost power - tuners go around 11.5 AFR for more power and enough fuel for a bit cooling. (ROZ95 or better ROZ98 - don´t know which ROZ pumpgas in USA is)
can you post your open loop fuel table?
11,5 - 12,0 is allways a good area for turbo cars. Subarus for example are factory richer - but lost power - tuners go around 11.5 AFR for more power and enough fuel for a bit cooling. (ROZ95 or better ROZ98 - don´t know which ROZ pumpgas in USA is)
can you post your open loop fuel table?
Last edited by oshiikuru; 10-28-2014 at 02:41 PM.
#8
I got a chip tune from a vendor here that ran at 12.5:1 at WOT. I asked the same question and was assured everything was OK. I believed them and drove the car with confidence. My motor lasted about 400 miles before the rings gave out and started burning oil, leading to piston skirt damage and eventually a full overhaul. According to the company and their lawyer, I'm no longer allowed to mention it directly, so I'll leave the guesswork of who it was up to the people.
Cliff Notes: get your **** retuned before you end up like me. The point is 12.5AFR is not acceptable for a turbo miata
Cliff Notes: get your **** retuned before you end up like me. The point is 12.5AFR is not acceptable for a turbo miata
#17
On subis - 10.x can be bad with the wrong timing
on 95ROZ and around 10.5 (stock AFR 10.2 - 9.xx at WOT) with ~6PSI more boost, the engine feels some knocking.
on 98ROZ - all fine on my subaru (and at the STI from a buddy too) :-)
more boost and stock timing is always a bad thing. i´m going to tune the miata around 1degree each 1,4 PSI at the beginning and around safe 11.5 AFR at WOT (thinking this is a good starting point - or i´m wrong?).
on 95ROZ and around 10.5 (stock AFR 10.2 - 9.xx at WOT) with ~6PSI more boost, the engine feels some knocking.
on 98ROZ - all fine on my subaru (and at the STI from a buddy too) :-)
more boost and stock timing is always a bad thing. i´m going to tune the miata around 1degree each 1,4 PSI at the beginning and around safe 11.5 AFR at WOT (thinking this is a good starting point - or i´m wrong?).
#18
Senior Member
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I know about RON (Research Octane Number) MON (Motor Octane Number) and AKI (Anti Knock Index (RON+MON)/2 )
Is ROZ the same as RON?
If so, premium fuel in the US ranges between around 95 RON for 91 AKI fuel, 97 RON on 93 AKI, and 99 RON on 94 AKI.
Keith
Is ROZ the same as RON?
If so, premium fuel in the US ranges between around 95 RON for 91 AKI fuel, 97 RON on 93 AKI, and 99 RON on 94 AKI.
Keith
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