My car kept holding back after 4k rpm - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Frsexxxy · 05-08-2013, 01:55 PM

Everytime I stepped on it after 4k rpm it was holding back, idk why. Could it be because of the warm whether? I have a white out frs, injen intake, srt header back, and it was tuned. I reflashed it last night and I didn't have this problem again? I was hoping, maybe the white out would reflect the heat.

flippy · 05-08-2013, 01:57 PM

my guess is bad quality gasoline. lower octane retards the cam timing.

xjohnx · 05-08-2013, 01:58 PM

Quote:

Originally Posted by Frsexxxy

Everytime I stepped on it after 4k rpm it was holding back, idk why. Could it be because of the warm whether? I have a white out frs, injen intake, srt header back, and it was tuned. I reflashed it last night and I didn't have this problem again? I was hoping, maybe the white out would reflect the heat.

Could be the intake, next time it happens get some logs and send them to your tuner.

Frsexxxy · 05-08-2013, 01:59 PM

Bad quality like how?

I always use premium 93 octane. I was thinking the same thing

Quote:

Originally Posted by flippy

my guess is bad quality gasoline. lower octane retards the cam timing.

flippy · 05-08-2013, 02:15 PM

hmmm depends what brand of gasoline. some use more additives and some not as much. or it could also be just a bad batch like with a lot of dirt and crap in it.

http://www.toptiergas.com/

King Tut · 05-08-2013, 02:21 PM

Readjust your butt dyno.

cfusionpm · 05-08-2013, 02:27 PM

In warm temperatures, the ecu dials back the hp. It was documented in a recent YouTube video posted here. Showed something like 15hp drop after back to back dyno runs without letting it cool.

xjohnx · 05-08-2013, 02:52 PM

Quote:

Originally Posted by cfusionpm

In warm temperatures, the ecu dials back the hp. It was documented in a recent YouTube video posted here. Showed something like 15hp drop after back to back dyno runs without letting it cool.

Theres a difference between warm temperatures and doing back to back dyno runs. Dyno runs you're not getting anywhere near the volume of air through the car that you would get on a highway. I seriously doubt that heat is the issue here, especially if the issue went away with a reflash.

Gary in NJ · 05-08-2013, 02:55 PM

Quote:

Originally Posted by Frsexxxy

I was hoping, maybe the white out would reflect the heat.

You're kidding, right?

mad_sb · 05-08-2013, 03:00 PM

Quote:

Originally Posted by flippy

my guess is bad quality gasoline. lower octane retards the cam timing.

ignition timing not cam timing
@Frsexxxy you probably either had learned knock retard or large positive long term fuel trims... my guess is the fuel trims because if you had knock retard before the flash, with no other changes, you would have it again.

NickFRS · 05-08-2013, 03:15 PM

Turn off your A/c

cfusionpm · 05-08-2013, 03:27 PM

Quote:

Originally Posted by xjohnx

Theres a difference between warm temperatures and doing back to back dyno runs. Dyno runs you're not getting anywhere near the volume of air through the car that you would get on a highway. I seriously doubt that heat is the issue here, especially if the issue went away with a reflash.

The video can be seen here: http://www.ft86club.com/forums/showthread.php?t=35653

I'm just taking his word for it.

Frsexxxy · 05-09-2013, 01:10 AM

Lol no,
I always get white cars because they reflect heat. My 240 was white, my integra was white, and my frs is white

Quote:

Originally Posted by Gary in NJ

You're kidding, right?

Blighty · 05-09-2013, 06:49 AM

I've always wondered if the excellent seal of the engine bay, hood and bottom, causes a heat build-up.

I don't know about anyone else, but my engine bay is much hotter than my previous cars, without hard or prolonged driving.

I really want the side panels to vent - anyone done mods to that effect?

05-08-2013, 01:55 PM	#1
Frsexxxy Member Join Date: Nov 2012 Drives: White Virgin frs Location: Tx Posts: 97 Thanks: 27 Thanked 10 Times in 7 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	My car kept holding back after 4k rpm Everytime I stepped on it after 4k rpm it was holding back, idk why. Could it be because of the warm whether? I have a white out frs, injen intake, srt header back, and it was tuned. I reflashed it last night and I didn't have this problem again? I was hoping, maybe the white out would reflect the heat.

05-08-2013, 02:21 PM	#6
King Tut NASA SpecE30 Racer Join Date: May 2012 Drives: 2006 Honda S2000 Location: Gulf Breeze, FL Posts: 7,279 Thanks: 607 Thanked 5,759 Times in 3,055 Posts Mentioned: 274 Post(s) Tagged: 10 Thread(s)	Readjust your butt dyno. __________________ - King Tut Street/Track Car: 2006 Honda S2000 TT3 \|\| Race Car: 1987 BMW 325is SpecE30 \|\| Tow Vehicle: 2014 RAM 1500 EcoDiesel Sold Cars: 2012 BMW M3 \|\| 2013 Subaru BRZ \|\| 2012 Porsche Cayman R \|\| 2009 Chevrolet Z06 \|\| 2009 BMW M3 \|\| 2004 BMW M3 \|\| 2004 Nissan 350Z

05-08-2013, 03:15 PM	#11
NickFRS Senior Member Join Date: Jun 2012 Drives: 2013 Asphalt FRS Location: Gladstone Posts: 1,450 Thanks: 899 Thanked 440 Times in 286 Posts Mentioned: 75 Post(s) Tagged: 0 Thread(s)	Turn off your A/c __________________ 2013 Sion FRS 2014 Subaru WRX 2014 Subaru XV

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