OFT and Stock headers and exhaust - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

LowAndSlowBecauseNoTurbo · 03-08-2017, 11:34 AM

whats going on everyone,
back again with another question. so I was looking into getting coilovers and then getting the OFT buuuuuuut, I can't stand this idle dip any longer! I'm just going to get the eibach sportline springs and get the OFT to get rid of this dip. my question is, will I be able to run (and get rid of the torque dip) and tune the OFT with my stock headers and exhaust? if this has already been asked and replied to please redirect me. I was at a meet last night and I talked to a guy that was running OFT on stock headers and he said it cleared it up almost gone. I'm trying to get outside perspectives to see how true this is. thanks in advance

brzzy · 03-08-2017, 11:44 AM

In short, yes. I run stock headers + exhaust (only a Berk HFC FP) and I can confirm that torque dip is gone and oft allows a lot of tuning to be had even with stock/oem parts.

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brzzy · 03-08-2017, 11:44 AM

http://www.ft86club.com/forums/showthread.php?t=71157

There ya go.

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LowAndSlowBecauseNoTurbo · 03-08-2017, 12:13 PM

Quote:

Originally Posted by brzzy

In short, yes. I run stock headers + exhaust (only a Berk HFC FP) and I can confirm that torque dip is gone and oft allows a lot of tuning to be had even with stock/oem parts.

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so Im able to run it but I would have to run it on the 1st tune and not the second tune correct? the dip is completely gone or is it just pushed down to 2k?

brzzy · 03-08-2017, 12:15 PM

Quote:

Originally Posted by LowAndSlowBecauseNoTurbo

so Im able to run it but I would have to run it on the 1st tune and not the second tune correct? the dip is completely gone or is it just pushed down to 2k?

Correct, you'll run STG 1.

http://www.ft86club.com/forums/showthread.php?t=71157

Check out that thread.

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JazzleSAURUS · 03-08-2017, 12:46 PM

Even better, take the stock headers off, bash the cat out, and run OFT Stage 2 EL.

guybo · 03-08-2017, 01:33 PM

Stage 1 helps with the torque dip but doesn't eliminate it. Stage 2 with a gutted cat evens out the torque dip but the car still doesn't pull like it should. The torque should build steadily with increased RPM but in the erstwhile torque dip it just plateaus and builds again after 4k or so. Check out some stage 2 dyno sheets and you see it. Still stage 2 + gutted cats makes the car a lot better- like a new car.

Rezi · 03-25-2017, 12:56 PM

I run the Stage 2 EL (Petrol) tune on my OEM-Header HFC.
From the logs it was worse on stage 1, it likes stage 2 much more.
Dip is gone for me. Hell lot of a difference a highflowcatalyzer can make.

LowAndSlowBecauseNoTurbo · 03-25-2017, 12:59 PM

So you have a high flow cat on your front pipe? Or you gutted the cat on the headers and left the front pipe?

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Rezi · 03-25-2017, 01:29 PM

Modified OEM header. stock-cat out. HFC in.
Frontpipe is umodified.

Logs are looking pretty good. Little FLKC but nothing significant.

Lantana frs · 03-25-2017, 03:31 PM

If you're purely street driving it I would skip the coil overs and put a good header and oft tune. E85 if its available and you wont be worried about a torque dip.

Rougenite · 03-25-2017, 03:41 PM

Concur with above. E85 + tune = win. Headers make it even better.

03-08-2017, 11:44 AM	#2
brzzy @anthonysestito Join Date: Oct 2015 Drives: 2013 Sterling Silver Metallic BRZ Location: Vaughan Posts: 391 Thanks: 117 Thanked 111 Times in 86 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	In short, yes. I run stock headers + exhaust (only a Berk HFC FP) and I can confirm that torque dip is gone and oft allows a lot of tuning to be had even with stock/oem parts. Sent from my iPhone using Tapatalk __________________ 2013 BRZ LIMITED STERLING SILVER METALLIC IG: @ANTHONYSESTITO

03-08-2017, 11:44 AM	#3
brzzy @anthonysestito Join Date: Oct 2015 Drives: 2013 Sterling Silver Metallic BRZ Location: Vaughan Posts: 391 Thanks: 117 Thanked 111 Times in 86 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	http://www.ft86club.com/forums/showthread.php?t=71157 There ya go. Sent from my iPhone using Tapatalk __________________ 2013 BRZ LIMITED STERLING SILVER METALLIC IG: @ANTHONYSESTITO

03-08-2017, 12:46 PM	#6
JazzleSAURUS Senior Member Join Date: May 2015 Drives: 15 BRZ LTD, 05 FXT Location: Western MA Posts: 1,032 Thanks: 561 Thanked 558 Times in 351 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Even better, take the stock headers off, bash the cat out, and run OFT Stage 2 EL. __________________ SOLD: 2015 WRB BRZ Limited ('02 WRX BBS, S-04's, Stoptech Sport pads, MXP SP, AVO drop in filter, Mishimoto Intake tube, decatted header, OFT 93 Stage 2 EL Tune, Kartboy rear shifter bushing, Whiteline transmission and subframe lockout bushings, ST Coilovers, SPC Camber bolts w/smaller crash bolt, SPC LCA's & SPC Toe Arm bushings, Red TOMs, TRD Wing.)

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03-08-2017, 01:33 PM	#7
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	Stage 1 helps with the torque dip but doesn't eliminate it. Stage 2 with a gutted cat evens out the torque dip but the car still doesn't pull like it should. The torque should build steadily with increased RPM but in the erstwhile torque dip it just plateaus and builds again after 4k or so. Check out some stage 2 dyno sheets and you see it. Still stage 2 + gutted cats makes the car a lot better- like a new car.

03-25-2017, 12:56 PM	#8
Rezi Member Join Date: Nov 2015 Drives: GT86 Location: Europe Posts: 69 Thanks: 17 Thanked 11 Times in 11 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I run the Stage 2 EL (Petrol) tune on my OEM-Header HFC. From the logs it was worse on stage 1, it likes stage 2 much more. Dip is gone for me. Hell lot of a difference a highflowcatalyzer can make.

03-25-2017, 01:29 PM	#10
Rezi Member Join Date: Nov 2015 Drives: GT86 Location: Europe Posts: 69 Thanks: 17 Thanked 11 Times in 11 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Modified OEM header. stock-cat out. HFC in. Frontpipe is umodified. Logs are looking pretty good. Little FLKC but nothing significant.

03-25-2017, 03:31 PM	#11
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) Tagged: 0 Thread(s)	If you're purely street driving it I would skip the coil overs and put a good header and oft tune. E85 if its available and you wont be worried about a torque dip.

03-25-2017, 03:41 PM	#12
Rougenite Senior Member Join Date: Dec 2012 Drives: Raven FR-S Location: San Antonio, Texas Posts: 286 Thanks: 17 Thanked 36 Times in 30 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Concur with above. E85 + tune = win. Headers make it even better.

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