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JUNTW Full Exhaust Installed

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Old Nov 15, 2009 | 12:00 AM
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Default JUNTW Full Exhaust Installed

Hi guys
Just installed JUNTW full exhaust.
Car works great and feels a lot beter after 4500 rpm
It was a direct bolt on.
Have to say it's an expensive mod but for us here in Europe without the option of an IS350 it's a pretty good deal.
Posting some pic and Dyno Charts.
Attached Thumbnails JUNTW Full Exhaust Installed-juntw6.jpg   JUNTW Full Exhaust Installed-juntw7.jpg   JUNTW Full Exhaust Installed-lexus-is250-2nd-dyno-bhp.jpg   JUNTW Full Exhaust Installed-lexus-is250-2nd-dyno-torque.jpg  
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Old Nov 15, 2009 | 12:11 AM
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It looks nice bro.
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Old Nov 15, 2009 | 02:15 AM
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nicee !! so how many Hp/torque increase? sry the dyno charts are too small to see..
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Old Nov 15, 2009 | 10:44 AM
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Stock IS250
204 BHP 175 RWHP
23 Nm of Torque

With JUNTW
239 BHP 205 RWHP
29,5 Nm of Torque
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Old Nov 15, 2009 | 10:47 AM
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Damn those are some nice gains. Any video clips? Those dynos include your K&N though right?
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Old Nov 15, 2009 | 01:24 PM
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It looks like both charts posted are the "after" dynos...
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Old Nov 15, 2009 | 01:36 PM
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Impressive gains
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Old Nov 15, 2009 | 04:17 PM
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Originally Posted by nmpeter
Damn those are some nice gains. Any video clips? Those dynos include your K&N though right?
Yes the dyno includes the K&N
Will post on youtube once i have some free time.

Last edited by pepos; Nov 15, 2009 at 04:44 PM.
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Old Nov 15, 2009 | 04:18 PM
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wow thats a surprising amount of increase. nice!
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Old Nov 15, 2009 | 04:24 PM
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Originally Posted by Kurtz
It looks like both charts posted are the "after" dynos...
Yes these are the aft charts BHP and torque.
I did the before with TRC on (didn't do the pedal dance) and the results where not accurate.
First i thought that the Dyno machine was a crap cause showed 196 BHP 153 RWHP but then occured to me that TRC was on.But even with a useless before dyno the gains are there!!!
A lot of guys did a stock dyno so the numbers are known.
Attached Thumbnails JUNTW Full Exhaust Installed-lexus-is250-1st-dyno.jpg  

Last edited by pepos; Nov 15, 2009 at 04:31 PM.
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Old Nov 15, 2009 | 04:38 PM
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Today i did a test with a friend's Stock IS250. From stop until 160 Km/h left him four cars behind (Red light ahead).
The guy couldn't believe it that my mods where only intake and exhaust.
My next step will be a piggy that will work.
Little tricky but we have some guys here in Greece that may do it.
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Old Nov 15, 2009 | 05:05 PM
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Whoa, those are some very nice gains for sure.
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Old Nov 15, 2009 | 07:16 PM
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How come ive never heard of this exhaust before? lol
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Old Nov 15, 2009 | 10:17 PM
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nice gain, some sound clip would be nice
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Old Nov 16, 2009 | 06:47 AM
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Originally Posted by L-S-D
How come ive never heard of this exhaust before? lol
Jun-TW setup has been around for a while, but I don't think anyone in the US has bought it since it costs like 4-5k for the whole thing... in other countries where just buying a 350 isn't an option this might be more attractive to 250 owners.
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