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Old 02-23-2011, 04:54 PM   #21
Bellicose
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Did Randy tune the car for you? I thought he generally tuned for in the 11.5-8 range.
Yea, it was a solid 11.5 when going WOT in any of the gears. After I added the race exhaust, the A/F spiked a bit and had to dial down my MBC a bit. Did a datalog for him to check it out and all was well. Since I'm running 93 octane instead of that crap they have out in Cali; I'm not worried about it. I think he stays with 11.5 to play it safe with customer cars, I'm pretty sure they run leaner A/F on their shop/personal cars.

I will not hesitate to have my car tuned to run at 12:1 A/F when I have the new setup in the car soon .
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Old 02-23-2011, 04:57 PM   #22
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I will not hesitate to have my car tuned to run at 12:1 A/F when I have the new setup in the car soon .
On 93octane or race fuel?
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Old 02-23-2011, 05:06 PM   #23
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it will be tuned for 93 octane. If I have it tuned for race fuel (100 octane); that will be when a built 2.3 is in, to max out the turbo to see what it can do.
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Old 02-23-2011, 06:04 PM   #24
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Anytime we take Jared's car to the track it is NEVER richer than 12.5:1 and when he made 560whp it was over 13:1.

With his stock motor the car for a year with 93 octane at 12:1 afrs.
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Old 02-23-2011, 06:20 PM   #25
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You have sure changed your mind about how tom like to tune haven't you???
LMAO if you knew the whole story you would see that, yes my car ran good with Toms tune, but nothing like it does with Fernando tuning now. Tom use to pretty much beg Chris (Earls32) and i to post some nice things about his tuning, when things would pop up. Me being younger then and not knowing, i would do it without thinking. But also i didnt know what a great tune was only a good one. Theres alot of lies in that statement
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Old 02-23-2011, 07:08 PM   #26
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I can already see this thread going downhill...I vote lockdown before people get their feelings hurt.
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Old 02-23-2011, 07:25 PM   #27
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#1 Rule - adjust timing first! Adjust AFR to suit timing.

If engine temps are creeping and AFR leans out, fix the cooling system, add capacity, use better coolant or improve airflow over the radiator core. Using more fuel to be 'safe' is a bandaid fix.
If it's an IAT/heat soak issue, obviously a better intercooler is needed.

Also the differences in tunes/tuners probably relates to the total timing each feels is safe. I wouldn't doubt if Tom tries to run more timing than Randy, though I don't expect either to divulge that info.
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Old 02-23-2011, 07:39 PM   #28
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^^^ Interesting. I know some other guys who dial in AFR first and their cars are running hard.
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Old 02-23-2011, 08:00 PM   #29
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Well look at it this way,
Does more fuel make more cylinder pressure? No. More over time? Yes, but that depends on the ignition point and burn speed.
Does more timing make more cylinder pressure? Yes, to a point. The earlier you can fire the plugs the better. Remember the goal for MBT is to get maximum cylinder pressure in the 13-15* ATDC range. That will give the most TQ over the longest and safest rotational range.

If someone's tuning rich it could be they are adding too much timing (fuel is slowing the burn to prevent knock) ... or not enough and the burn is too short. You always have to remember that AFR is a byproduct of combustion. Therefore it can only indicate what could be a problem, never what is exactly the problem (if any).
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Old 02-23-2011, 08:02 PM   #30
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Quote:
Originally Posted by Roushturboedzx3 View Post
LMAO if you knew the whole story you would see that, yes my car ran good with Toms tune, but nothing like it does with Fernando tuning now. Tom use to pretty much beg Chris (Earls32) and i to post some nice things about his tuning, when things would pop up. Me being younger then and not knowing, i would do it without thinking. But also i didnt know what a great tune was only a good one. Theres alot of lies in that statement
First lets get the FACTS straight , I never tuned the set up you now have so you have no idea how my tune comparees to your now tuner , You had MANY issues with coil packs and other things that you your self admitted on here your now tuner found to be an issue , Isnt this the same tuner that you BASHED for blowing up your first engine ??????

I never begged anyone for anything , I ask everyone to post about my tuning some do and some dont , Your 1.5 years older then my last tune LOL

You can bash me all you like Jim we both know what you did and what the issues were

Tom
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