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I see there are some Flex Fuel "kits" out there. Do you have a preferred component list for setting up a true flex fuel tune?
I have an STi that I run a Cobb Accessport with Flex Fuel. It works exceptionally well. I'd love to be able to do something like that on my C63.
So the Bosch Motronic 9.7 does not have provisions for an ethanol sensor, nor has Bosch released any sort of code base to allow tuners to develop custom firmware to add in new features like flex fuel or map switching.
In terms of aftermarket flex fuel kits for the M156, I do not recommend them, but will support them. So far AFD has been the better of the two kits between eflexfuel and AFD, but neither really are ideal as fueling swings +/-12 points on any given drive cycle. these kits rely heavily on the computer to self adjust and compensate for inaccuracies. when you have swings of +/-12 points on the trim scale, you introduce the high probability of misfire due to inaccurate fuel delivery. in transitional state, the misfires will never be enough to trigger an engine code, but over time these fuel swings will cause oxygen sensors to deteriorate at an accelerated rate. In the end a dedicated ethanol E85 tune is ideal and what I recommend for ultimate performance and reliability.
So the Bosch Motronic 9.7 does not have provisions for an ethanol sensor, nor has Bosch released any sort of code base to allow tuners to develop custom firmware to add in new features like flex fuel or map switching.
That's unfortunate. I believe the Cobb setup on the Subaru taps the ethanol sensor into the TGV or EGR or secondary O2. Something that really is only used at cold start IIRC. I don't recall specifically, but it's a pretty neat plug-n-play setup. You can even get an additional fuel pressure sensor with it and dial things back if the ECU sees pressure fall short.
That's unfortunate. I believe the Cobb setup on the Subaru taps the ethanol sensor into the TGV or EGR or secondary O2. Something that really is only used at cold start IIRC. I don't recall specifically, but it's a pretty neat plug-n-play setup. You can even get an additional fuel pressure sensor with it and dial things back if the ECU sees pressure fall short.
yeah...so the difficulty is probably the lack of another 9.7 computer not having flex fuel as a standard feature. i mean HP Tuners has ported over flex fuel functionality into some of their GM vehicles as they probably were able to utilize another vehicles flex fuel firmware and chop it up. also, it seems the GM computers are very easy to reverse engineer as their credit requirements are only 2 versus us requiring 8.
yeah...i'm pretty sure it has to do with reverse engineering.
to help paint a picture...the Bosch Motronic 9.7 has 12,454 available maps...reverse engineering involves not only identifying what maps do what but also how the firmware interacts and selects what maps to utilize for that specific vehicle variation.
i'm pretty sure the GM based computers aren't as extensive.
please reach out through email as for a limited time we are discounting our tune service to welcome the warm weather. please inquire directly at info@eightysixtuned.com !
please reach out through email as for a limited time we are discounting our tune service to welcome the warm weather. please inquire directly at info@eightysixtuned.com !
In too. Very excited to see what this is about. I appreciate everyone's feedback and Barry's helpful notes here and throughout the forum--it was a buy with confidence.
482 whp 435 ft/lbs on 3 runs 510.92 whp 461.1 ft/lbs +6% to simulate a dyno jet e85 reading at 79.4% engine 162k miles factory engine opened to replace headbolts mustang dyno (6-12% lower reading than a dynojet) hammer tune by @eightysixtuned
460 whp 428 ft/lbs on 3 runs 487.6 whp 453.68 ft/lbs +6% to simulate a dyno jet 91 octane factory engine only opened to replace headbolts mustang dyno (6-12% lower reading than a dynojet) hammer tune with popcorn by @eightysixtuned
483whp 463ft/lbs on 3 runs 511.98whp 490.78ft/lbs +6% to simulate a dyno jet e85 unopened factory motor on old style headbolts mustang dyno (6-12% lower reading than a dynojet) hammer tune with burble by @eightysixtuned
I am interested! Everyone got the good feels on this?
When is the next sale?
Hey mate,
Definitely have the good feels on Barry/hachiroku's services. He has been nothing but helpful with tuning my car, even going so far as to diagnose issues with my car caused by another persons tune.
I cannot reccomend Barry enough.
if you're looking to get a customised tune specific for your needs, and vehicle then barry is definitely the best out there.
I am interested! Everyone got the good feels on this?
When is the next sale?
Barry offers custom tuning which is what you want. Whether that’s with Barry or not.
I can vouch that Barry understand and listens and adjusts his tune per customer’s feedback. Keep in mind that in person custom tuning usually takes 3-5 hours on average. That’s because the tuner is constantly logging, adjusting, remapping, etc… working remotely can slow things down but Barry is very good at getting back.
Here's our latest dyno. Gen 3, 2.9L Whipple. Standard 67mm pulley included with the kit. I tried looking but are there any other 67mm's in the 700's? We are 1-2 maps from max power potential, but ran out of time before dyno time. Power starts off gently as we limit the power down low unless the motor is built or if the customer asks for max power upfront. Reduced power down low aids in drag launching as well and we work with each customer to fine tune power delivery for maximum launching capability. NA or Supercharged, fine tuning of power delivery for drag launching is something we offer.
Here's our latest dyno. Gen 3, 2.9L Whipple. Standard 67mm pulley included with the kit. I tried looking but are there any other 67mm's in the 700's? We are 1-2 maps from max power potential, but ran out of time before dyno time. Power starts off gently as we limit the power down low unless the motor is built or if the customer asks for max power upfront. Reduced power down low aids in drag launching as well and we work with each customer to fine tune power delivery for maximum launching capability. NA or Supercharged, fine tuning of power delivery for drag launching is something we offer.
710whp / 646tq
Can't say enough good things about my custom tuning experience with eightysixtuned (Hachiroku/Barry). I was on the hunt for a tuner for some time now, and not having much luck in terms of getting many questions answered about specifics. Most of the other tuners I reached out to simply wanted to ram a dyno tune down my throat and call it a day. It didn't make me feel comfortable handing over my car at all.
From the minute I started preliminary talks with Barry he went above and beyond with answering all of my questions, and developing a game plan for what I hoped to achieve - which was max power, without compromising safety or drivability.
For the record, my factory can tune worked fine, never gave me any problems - but it felt lacking. Inconsistent if you will. Well I can honestly tell you that my car is night and day different now. It not only is a complete animal in terms of raw white knuckle power, but it runs even smoother and shifts snappier than before. Some of the final logs were flat out were borderline scary with how hard that car pulled.
The most satisfying part about the experience (maybe beside breaking 700whp on the low boost pulley...) was the number of logs Barry analyzed and provided feedback on. Safety was always # 1, and any increases were done progressively with a watchful eye on IAT's and all other vitals. This was by no means a "one and done" service where once money is exchanged and a "good" tune is delivered the tuner starts to distance themselves. If anything, Barry was pushing ME to do additional logging, and trying different fuel and cooling combinations to optimize results.
As mentioned above, we have a little power left of the table. I also have a 60mm pulley and a green belt in my tool box - very excited to see what this car is capable of when we are finished. I believe it will set some record track times for Canada (provided the driver gets used to all this power and gets a little more practice at the track).
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
