IS F (2008-2014) Discussion topics related to the IS F model

Just did a dyno with the tune...pretty disappointed

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Old 03-16-16, 10:23 AM
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idoke1
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Default Just did a dyno with the tune...pretty disappointed

As the title states. For some reason, my car is on making 297 whp and 319 wheel torque. The shop I brought it to had never dyno a lexus before. Could that be the issue? Its also on a dynojet. Not sure what to think. Please chime in. Oil is new and full. Intake filter is only @ 2k miles. All runs were made in 6th gear. Car was on sport mode and traction is COMPLETELY turned off (pedal dance)
Mods:

RR-RACING ECU tune
Deleted ALL CATS
Custom 2.5 inch x pipe to borla mufflers full exhaust
RR-RACING AOS
Attached Thumbnails Just did a dyno with the tune...pretty disappointed-20160316_101736.jpg   Just did a dyno with the tune...pretty disappointed-20160316_092118.jpg  

Last edited by idoke1; 03-16-16 at 10:51 AM. Reason: More info added
Old 03-16-16, 10:30 AM
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ISF4life
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What ? 297 ? Lolz what gear are they using ? Lolz u mean 397 ? Lolz
Old 03-16-16, 10:33 AM
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MisterSkiz
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1) Turn your traction control fully off (long push)
2) Make sure you are in 6th gear manual mode to dyno.
Old 03-16-16, 10:34 AM
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lolfunxion
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Do you have the stock cats in the midpipe? Not sure if the exhaust you described is a full exhaust.

It could be a very low reading dyno, you should always want to take a baseline dyno run before the mods. You want to see the difference in numbers, not the final numbers since dynos can read high or low.

Did you break in the tune and mods as well?

that number seems wrong.
Old 03-16-16, 10:35 AM
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idoke1
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^^On the graph, I'm losing power top end for sure. It could be heat soak as my hood was closed and all 3 runs were pretty much running consistently. No cool off period. Yes, traction was Completely turned off and was in sport mode. I'm not sure if the dyno guy put it in M mode. Could it be from just using D mode and just using paddle shifters?
Old 03-16-16, 10:36 AM
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ISF4life
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U cant be losing 50 whp lolz , i'm sure they doing it wrong .
Old 03-16-16, 10:40 AM
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Bigjon3475
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It's dumping fuel at the top end. It's close to 11:1 which is on the low end for even forced induction cars.

Your numbers are not corrected. Your barometric pressure is near sea level (29.92 inhg) and your IATs are lower than the correction factor although your humidity is higher (water takes up space that oxygen can't) so you should be seeing higher number. If I had to guess your car is pulling timing as it dumping fuel as well and it's all happening up high because your torque numbers are (even though they're lower than expected) higher than your HP numbers.
Old 03-16-16, 10:43 AM
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MisterSkiz
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Originally Posted by Bigjon3475
It's dumping fuel at the top end. It's close to 11:1 which is on the low end for even forced induction cars.

Your numbers are not corrected. Your barometric pressure is near sea level (29.92 inhg) and your IATs are lower than the correction factor although your humidity is higher (water takes up space that oxygen can't) so you should be seeing higher number. If I had to guess your car is pulling timing as it dumping fuel as well and it's all happening up high because your torque numbers are (even though they're lower than expected) higher than your HP numbers.
Thats why I'm wondering if traction control is kicking in...cutting spark so it dumps fuel.
Old 03-16-16, 10:54 AM
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idoke1
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Man......I am going to call around and find a reputable dyno shop. This shop is new and it looks great. I should had taken the warning when they say this will be their "first" lexus they will dyno.
Old 03-16-16, 11:00 AM
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SubOrbital
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I would want to data log on the street to see if it's dumping fuel under normal conditions.
Old 03-16-16, 11:02 AM
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RSXiMUS
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Jesus man, did they leave the parking brake on? LOL, I pulled similar numbers with my stock ISF when the operator accidentally left the E-Brake on for my first run.

First the guy with zero gains on his Borla exhaust and now this..
LOL, I'm starting to lose faith in all dyno numbers recently, hah.
Old 03-16-16, 11:03 AM
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Originally Posted by Bigjon3475
It's dumping fuel at the top end. It's close to 11:1 which is on the low end for even forced induction cars.

Your numbers are not corrected. Your barometric pressure is near sea level (29.92 inhg) and your IATs are lower than the correction factor although your humidity is higher (water takes up space that oxygen can't) so you should be seeing higher number. If I had to guess your car is pulling timing as it dumping fuel as well and it's all happening up high because your torque numbers are (even though they're lower than expected) higher than your HP numbers.

yep, it definitely is dumping fuel after 4k rpm.
Old 03-16-16, 11:04 AM
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297 whp what in the world.

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Old 03-16-16, 11:05 AM
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Originally Posted by RSXiMUS
Jesus man, did they leave the parking brake on? LOL, I pulled similar numbers with my stock ISF when the operator accidentally left the E-Brake on for my first run.

First the guy with zero gains on his Borla exhaust and now this..
LOL, I'm starting to lose faith in all dyno numbers recently, hah.
Lol. Parking brake. Hilarious
Old 03-16-16, 11:05 AM
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Please call around and ask them to open the hood next time.

I did mine on a mobile dyno jet with hood open, 6th gear, and no fan.


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