Joez exhaust/intake = no gains :(
#1
Lexus Test Driver
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Join Date: Aug 2009
Location: Middle East
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Do not intend to bash the product in any way.. but just stating the facts. After installing the exhaust/intake, we raced a stock isf and were shocked that the stock won. So we went ahead and dynoed the car again.. I think i remember another person who had a similar issue. Guess we are the unlucky ones.
STOCK:
![](http://i852.photobucket.com/albums/ab87/Ridoor/ISF002.jpg)
POST DYNO: Smoothing 0
![](http://i852.photobucket.com/albums/ab87/Ridoor/IMG00277-20110712-0132.jpg)
Smoothing: 5
![](http://i852.photobucket.com/albums/ab87/Ridoor/IMG00280-20110712-0135.jpg)
Friend is just frustrated and thinking of getting an ISS exhaust
STOCK:
![](http://i852.photobucket.com/albums/ab87/Ridoor/ISF002.jpg)
POST DYNO: Smoothing 0
![](http://i852.photobucket.com/albums/ab87/Ridoor/IMG00277-20110712-0132.jpg)
Smoothing: 5
![](http://i852.photobucket.com/albums/ab87/Ridoor/IMG00280-20110712-0135.jpg)
Friend is just frustrated and thinking of getting an ISS exhaust
![Frown](https://www.clublexus.com/forums/images/smilies/frown.gif)
Last edited by Rider; 07-11-11 at 04:06 PM.
#3
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Thats weird. I can't think of anything that could go wrong with piping to cause less gains other then the install.
Goodluck, and be patient. I'm sure it will be resolved.
Goodluck, and be patient. I'm sure it will be resolved.
#4
Lead Lap
iTrader: (2)
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I didnt pick up much from my Joe Z exhaust install. I did the Stock dyno and then the install and after dyno a few hours apart. I picked up maybe 5whp. Ive driven well over 2000 miles since then, so Id be curious to see where my new baseline is if its changed. They say that the computer will re-learn the added airflow and increase power over time...who knows. My butt dyno feels gains, but its been wrong before.
I have headers and intake at home in boxes waiting for re dyno and installs, just have to find time.
~Dv8
I have headers and intake at home in boxes waiting for re dyno and installs, just have to find time.
~Dv8
#5
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"Do not intend to bash the product in any way.. but just stating the facts. After installing the exhaust/intake, we raced a stock isf and were shocked that the stock won. So we went ahead and dynoed the car again.. I think i remember another person who had a similar issue. Guess we are the unlucky ones"
With all do respect I have had great dealings with JoeZ. I purchased my IS-F from a private seller this year and he reported back the same findings so he had the exhaust and intake removed. He was actually a CL memeber come to think of it. His dynos also found the same thing your dyno is representing.
With all do respect I have had great dealings with JoeZ. I purchased my IS-F from a private seller this year and he reported back the same findings so he had the exhaust and intake removed. He was actually a CL memeber come to think of it. His dynos also found the same thing your dyno is representing.
#7
Racer
iTrader: (5)
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You wouldnt see gains untill 4-5 drive cycles so if you just dropped it on a dyno right after you put the exhaust on you didnt give your ECU time to learn and adjust to your mods. It took 5-6 drive cycles on the dyno to get the gains from my headers and exhaust. Not dyno pulls, full drive cycles. Joe Z products are quality.