question for you guys - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Lantana frs · 12-13-2016, 09:38 PM

My butt dyno is sensing some unexplainable differences in performance as of late mostly low to midrange responsiveness. Sometimes it feels snappy and sometimes it feels like its turning 2 ac units. I've yet to log it but my oft is showing no iam fluctuation. Air temperature isn't varying enough to cause it imo. My car is a my13 with a new motor and ecu installed in early 14. To me, it feels like cam timing. My mods are Crawford power blocks and oft 93 tune. Thx in advance for your input.

ryoma · 12-13-2016, 09:46 PM

is your tune optimized for the power blocks?

Ultramaroon · 12-13-2016, 09:57 PM

You're just sensing day-to-day differences in air density, relative humidity, etc...

All engines behave the same way. Give yourself a high five for noticing.

Captain Snooze · 12-13-2016, 09:59 PM

You might like to put a relevant title to your post instead of "question for you guys".

Lantana frs · 12-13-2016, 10:03 PM

The tune is ots and I didn't take the time to synopsize into one sentence. Lol

Lantana frs · 12-13-2016, 10:11 PM

When I have the time I will tweak the tune. I have my heart set on a header and may remove the cpbs then.

Lantana frs · 12-13-2016, 10:17 PM

Quote:

Originally Posted by Ultramaroon

You're just sensing day-to-day differences in air density, relative humidity, etc...

All engines behave the same way. Give yourself a high five for noticing.

Jeez, I hope you're right. No cel, idles fine. You probably are right.

Ultramaroon · 12-13-2016, 10:25 PM

Quote:

Originally Posted by Lantana frs

Jeez, I hope you're right. No cel, idles fine. You probably are right.

Performance is also seriously affected by the nannies. If you're in the middle of a turn, even with the long press the computer won't let you punch it.

Driving in heavy rain is the worst because it severely interferes with driver input if it senses even the slightest bit of slip.

I'm a die-hard nanny hater but I'm also an old fart who's been comfortable with pushing the envelope for a looong time.

Hawk77FT · 12-13-2016, 10:54 PM

Quote:

Originally Posted by Captain Snooze

You might like to put a relevant title to your post instead of "question for you guys".

Initially I thought is for

steve99 · 12-13-2016, 10:57 PM

Have a look at you wot afr it should be no richer than 11.8

Have a look at your LTFT, the most common problem for NA guys is an intake or exhaust leak both will usually cause abnormally high LTFT like over 10%.

especially check your craford block install for leaks or dislodged hoses

humfrz · 12-13-2016, 11:09 PM

Quote:

Originally Posted by Ultramaroon

..................................I'm a die-hard nanny hater but I'm also an old fart who's been comfortable with pushing the envelope for a looong time.

Ultramaroon, back-in-the-day ..........

humfrz

12-13-2016, 09:38 PM	#1
Lantana frs Senior Member Join Date: Jun 2016 Drives: 13 frs red Location: Lantana fl Posts: 448 Thanks: 51 Thanked 198 Times in 115 Posts Mentioned: 1 Post(s)	question for you guys My butt dyno is sensing some unexplainable differences in performance as of late mostly low to midrange responsiveness. Sometimes it feels snappy and sometimes it feels like its turning 2 ac units. I've yet to log it but my oft is showing no iam fluctuation. Air temperature isn't varying enough to cause it imo. My car is a my13 with a new motor and ecu installed in early 14. To me, it feels like cam timing. My mods are Crawford power blocks and oft 93 tune. Thx in advance for your input.

12-13-2016, 09:46 PM	#2
ryoma Senior Member Join Date: Mar 2015 Drives: 2015 Subaru BRZ Limited CWP Location: SoCal Posts: 1,561 Thanks: 34 Thanked 669 Times in 469 Posts Mentioned: 13 Post(s)	is your tune optimized for the power blocks? __________________ My 2015 CWP BRZ Build

12-13-2016, 09:57 PM	#3
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,394 Thanks: 53,054 Thanked 37,230 Times in 19,309 Posts Mentioned: 1118 Post(s)	You're just sensing day-to-day differences in air density, relative humidity, etc... All engines behave the same way. Give yourself a high five for noticing. __________________ service manuals

12-13-2016, 09:59 PM	#4
Captain Snooze Because compromise ® Join Date: Jan 2012 Drives: Red Herring Location: australia Posts: 7,830 Thanks: 4,058 Thanked 9,576 Times in 4,205 Posts Mentioned: 60 Post(s)	You might like to put a relevant title to your post instead of "question for you guys". __________________ My car is completely stock except for all the mods.

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12-13-2016, 10:03 PM	#5
Lantana frs Senior Member Join Date: Jun 2016 Drives: 13 frs red Location: Lantana fl Posts: 448 Thanks: 51 Thanked 198 Times in 115 Posts Mentioned: 1 Post(s)	The tune is ots and I didn't take the time to synopsize into one sentence. Lol

12-13-2016, 10:11 PM	#6
Lantana frs Senior Member Join Date: Jun 2016 Drives: 13 frs red Location: Lantana fl Posts: 448 Thanks: 51 Thanked 198 Times in 115 Posts Mentioned: 1 Post(s)	When I have the time I will tweak the tune. I have my heart set on a header and may remove the cpbs then.

12-13-2016, 10:57 PM	#10
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,996 Thanks: 1,035 Thanked 4,998 Times in 2,985 Posts Mentioned: 598 Post(s)	Have a look at you wot afr it should be no richer than 11.8 Have a look at your LTFT, the most common problem for NA guys is an intake or exhaust leak both will usually cause abnormally high LTFT like over 10%. especially check your craford block install for leaks or dislodged hoses

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