Supercharge or not, need qualified assistance - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

jeepmor · 06-25-2022, 10:16 PM

The HKS kit I have claims 255whp, but I also think that's with their header. The 14 is about 155whp if IIRC. I was told the stock header is fine and no engine check lights is good with me on my commuter.

Teppka · 09-15-2022, 10:42 AM

A little update. Made custom exhaust with increased diameter pipe and custom tune. It added 25 whp.

The dyno was about 12 years old and could do reliable reading on automatic transmission. But here are the graphs of before/after.

Torque dip is still there but a little straightened up with slightly increased torque.
Headers are srock, so is cat converter to make sure I’ll have no issues with emissions.

My tuner said that exhaust gave about +5 whp and tune +20 whp.

FunnyGopher · 09-16-2022, 02:14 AM

Quote:

Originally Posted by Teppka

A little update. Made custom exhaust with increased diameter pipe and custom tune. It added 25 whp.

That's almost a 20% increase in power, congrats! Throw some tires on it and go for whirl.

09-15-2022, 10:42 AM	#16
Teppka Member Join Date: May 2021 Drives: Subaru BRZ Location: Turkey Posts: 97 Thanks: 9 Thanked 33 Times in 15 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Supercharge or not, need qualified assistance A little update. Made custom exhaust with increased diameter pipe and custom tune. It added 25 whp. The dyno was about 12 years old and could do reliable reading on automatic transmission. But here are the graphs of before/after. Torque dip is still there but a little straightened up with slightly increased torque. Headers are srock, so is cat converter to make sure I’ll have no issues with emissions. My tuner said that exhaust gave about +5 whp and tune +20 whp.

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06-25-2022, 10:16 PM	#15
jeepmor Senior Member Join Date: Apr 2014 Drives: 84 CJ7, 08 Duramax, 2014 FRS Location: Oregon Posts: 487 Thanks: 347 Thanked 131 Times in 105 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	The HKS kit I have claims 255whp, but I also think that's with their header. The 14 is about 155whp if IIRC. I was told the stock header is fine and no engine check lights is good with me on my commuter.

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