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Old 01-07-2015, 06:43 PM   #15
Turdinator
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Unexplained dip asside, I think the OFT OTS tune does really well considering it is within a few hp of a custom tune.
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Old 01-07-2015, 07:58 PM   #16
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Quote:
Originally Posted by Shiv@Openflash View Post
Can you please provide directions on how OTS map users can replicate/induce this issue on the road?
I may have run into this on a mildly uphill WOT (3rd gear) merge when I was on the 2.0x BETA (stage 2, 91 octane) flash. It wasn't until the other thread that I realized that subsequent attempts (on days it happened) to replicate the issue may have been load related, but I've never verified that. I was also attempting to merge into oncoming traffic in Chicago every time - that means watching the idiots around me, so who knows what else may have escaped my attention.

I've done this exact same merge many times since the 2.06 (I'm now on the 93 octane Stage 1) without ever running into that brief lull on the way up. I have not tried flashing back to the beta since then, nor would it be helpful right now out here given the lovely weather we have...

The only other time I remember I have run into something like this was the other day driving home in very cold temperatures (~7 degrees I believe, lots of snow the prior day) when I hit a patch of slippery while accelerating from a stop and the traction control blipped (I saw the light!) It felt exactly like I imagine the graph would - a sudden drop, and after a few seconds and traction having returned, acceleration continued apace. Of course, I don't know what would happen if traction control were to blip on a dyno - how it would show up, etc. so that's pure speculation.

It's not helpful in the least, I imagine. I can't do fourth gear pulls through the RPM range required, and certainly not 5th without finding my way to a dyno. It's on my list before AutoX season starts up in the spring - not sure if there's a MAHA out here.

C
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Old 01-07-2015, 09:37 PM   #17
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Stock '15 BRZ. OFT 2.062 91 octane tune. No issues.

It is what it is. Neither side will convince the other.
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Old 01-07-2015, 10:01 PM   #18
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Quote:
Originally Posted by cjd View Post
I may have run into this on a mildly uphill WOT (3rd gear) merge when I was on the 2.0x BETA (stage 2, 91 octane) flash. It wasn't until the other thread that I realized that subsequent attempts (on days it happened) to replicate the issue may have been load related, but I've never verified that. I was also attempting to merge into oncoming traffic in Chicago every time - that means watching the idiots around me, so who knows what else may have escaped my attention.

I've done this exact same merge many times since the 2.06 (I'm now on the 93 octane Stage 1) without ever running into that brief lull on the way up. I have not tried flashing back to the beta since then, nor would it be helpful right now out here given the lovely weather we have...

The only other time I remember I have run into something like this was the other day driving home in very cold temperatures (~7 degrees I believe, lots of snow the prior day) when I hit a patch of slippery while accelerating from a stop and the traction control blipped (I saw the light!) It felt exactly like I imagine the graph would - a sudden drop, and after a few seconds and traction having returned, acceleration continued apace. Of course, I don't know what would happen if traction control were to blip on a dyno - how it would show up, etc. so that's pure speculation.

It's not helpful in the least, I imagine. I can't do fourth gear pulls through the RPM range required, and certainly not 5th without finding my way to a dyno. It's on my list before AutoX season starts up in the spring - not sure if there's a MAHA out here.

C
TC kicking in would look exactly like that. I watched the videos and didn't see TC flashing but the slip light looks like it is on
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Last edited by Apoc; 01-07-2015 at 10:35 PM.
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Old 01-08-2015, 03:01 PM   #19
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FWIW here is another OFT user asking about a power loss ~4500 rpm
http://www.ft86club.com/forums/showp...postcount=2157
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Old 01-08-2015, 03:06 PM   #20
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Quote:
Originally Posted by tennisfreak View Post
FWIW here is another OFT user asking about a power loss ~4500 rpm
http://www.ft86club.com/forums/showp...postcount=2157
Weird, could it be E85 related? Noticed we both are running it

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Old 01-08-2015, 04:42 PM   #21
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@ck-GT86: Have you considered getting a flex fuel kit instead? Then you can mix E85 and 91 freely, and never need to worry about being on the right calibration.
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Old 01-08-2015, 05:48 PM   #22
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@ck-GT86: Have you considered getting a flex fuel kit instead? Then you can mix E85 and 91 freely, and never need to worry about being on the right calibration.
Absolutely, but maybe once I go FI. Unless you have one laying around that I could perhaps "borrow" for a while.

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Old 01-08-2015, 06:21 PM   #23
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nice review
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Old 01-09-2015, 04:40 AM   #24
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Has that sudden dip ever on the oft tune been recorded by another type of dyno?
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Old 01-09-2015, 04:08 PM   #25
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Quote:
Originally Posted by wootwoot View Post
Has that sudden dip ever on the oft tune been recorded by another type of dyno?
Looks like it based on the thread @tennisfreak linked to

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Old 01-10-2015, 01:56 PM   #26
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Is this only an issue on ethanol?
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Old 01-10-2015, 02:10 PM   #27
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Quote:
Originally Posted by wootwoot View Post
Is this only an issue on ethanol?
dont know, but its not a problem for everyone on ethanol or petrol

http://datazap.me/u/steve99/e85-200k-learn-155?log=0&data=1-2-3-9&solo=2&zoom=390-720

above is log of my car running oft E85 tune, unmodified and completly stock car , so it does not occurr on all cars

i am now running with catless uel header still no issue on standard oft tune E85.

currently running modified oft E85 tune to suit our high grade guaranteed 85% ethanol pump fuel here , still dont get that issue.

When I run petrol on OFT tune dont get issue either.

not saying it does not happen but must be some combination of fuel car rom type mods ect that causes it.
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Old 01-13-2015, 02:38 PM   #28
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Quote:
Originally Posted by steve99 View Post
dont know, but its not a problem for everyone on ethanol or petrol

http://datazap.me/u/steve99/e85-200k-learn-155?log=0&data=1-2-3-9&solo=2&zoom=390-720

above is log of my car running oft E85 tune, unmodified and completly stock car , so it does not occurr on all cars

i am now running with catless uel header still no issue on standard oft tune E85.

currently running modified oft E85 tune to suit our high grade guaranteed 85% ethanol pump fuel here , still dont get that issue.

When I run petrol on OFT tune dont get issue either.

not saying it does not happen but must be some combination of fuel car rom type mods ect that causes it.
Quick question, what gear was this performed in?

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