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Well, this goes to show you that all F's are not created equal. We just did a before and after dyno on a ISF that had only 6k miles on the clock and was bone stock when arrived. This car performed very well stock and made a great gain without anything but the headers.

Base line #'s on this car before the sikky header
375 hp and 322 tq

After the Sikky headers
409 hp and 341 tq

It did make slightly more 1 run but we threw that run out.
Here is the video with graph
 

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Awesome!

So 34 with the headers alone. How does the interior with headers only sound compared to stock? I wonder what that freak ISF will make with exhaust and intake added.

Thanks,

Tom
 

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375 stock?

the gain is impressive and consistent but that is one of the highest stock readings i have seen to date.
 

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Yes, it is high for a stock car. We all took a double take and even re dyno'ed several times to make sure it's not a fluke. This run was at operating temp to. It did drop a little like normal when heat soaked after 4 or 5 back to back runs, but it was still higher than what we have seen for a stock F. Guess this guy got lucky with a well put together motor? No other explanation.
 

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Yes, it is high for a stock car. We all took a double take and even re dyno'ed several times to make sure it's not a fluke. This run was at operating temp to. It did drop a little like normal when heat soaked after 4 or 5 back to back runs, but it was still higher than what we have seen for a stock F. Guess this guy got lucky with a well put together motor? No other explanation.
The dyno could just read a bit high. The difference in Hp could be consistent with the readings of other dynos. The importance here is the power gained and the consistent pulls shown in the video.
 

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Awesome!

So 34 with the headers alone. How does the interior with headers only sound compared to stock? I wonder what that freak ISF will make with exhaust and intake added.

Thanks,

Tom
it's actually fairly quiet. Don't think anyone would have a problem talking on a cell while its floored. It is noticeable that's the headers are on there though. It's been raining like crazy here so if the weather clears up we will try to get a vid of a drive by so everyone can hear the sound with stock exh.
 

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How long does it take to install? I read in the other thread the engine needs to get dropped in order to do this?
 

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first hello to everybody and please forget my english


here my final result with sikky header 376 HP & 347.1 TQ 21 degree outside no humidity at all (perfect day) on a dynojet dyno


not impress at all

my car have 15000 km
so after 3 different dyno the gain is not as much as everybody who pass on the dyno at sikky place


my base run was 367 with all the mod except the headers

my best run was 385 after resetting the ecu
today on a different dyno my best run was 376hp and the second one was 367 also !!!!!!


so ask me if i am impress ?? not at all

the only good thing is the sound (for me)

next step will be on a mustang dyno my result will be aprox 6-8 % less


p.s everything was sae 5 corrected

DID YOU SEE MY TQ IS 347.1 SAME AS POEPLE WHO HAVE 413 & 416 HP ??????????????????????
I THINK THE DYNAPACK IS NOT ACCURATE (CAUSING BY THE WHEEL NOT ON THE CAR) LESS POWERTRAIN LOSS

THAT POSSIBLE !!
 

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Is that a green ISF? Or just the lighting?

Lou
 

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375 stock?

the gain is impressive and consistent but that is one of the highest stock readings i have seen to date.
I agree as well thats the highest stock number I have ever seen. The owner lucked out with a "special" F. The gains are impressive just curious how much you would be able to squeeze out throwing in intake/exhaust. Look forward in checking out a drive by video.
 

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first hello to everybody and please forget my english


here my final result with sikky header 376 HP & 347.1 TQ 21 degree outside no humidity at all (perfect day) on a dynojet dyno


not impress at all

my car have 15000 km
so after 3 different dyno the gain is not as much as everybody who pass on the dyno at sikky place


my base run was 367 with all the mod except the headers

my best run was 385 after resetting the ecu
today on a different dyno my best run was 376hp and the second one was 367 also !!!!!!


so ask me if i am impress ?? not at all

the only good thing is the sound (for me)

next step will be on a mustang dyno my result will be aprox 6-8 % less


p.s everything was sae 5 corrected

DID YOU SEE MY TQ IS 347.1 SAME AS POEPLE WHO HAVE 413 & 416 HP ??????????????????????
I THINK THE DYNAPACK IS NOT ACCURATE (CAUSING BY THE WHEEL NOT ON THE CAR) LESS POWERTRAIN LOSS

THAT POSSIBLE !!
I don't want to come off and sound like a know it all, because I am definitly not a tuner or mechanic, but your dyno testing method does not strike me as being right man. You also can't compare results from one dyno to another as they are all a bit different even if they are the same make/model.

Looking at the chart you posted it doesn't even make sense to me.

1. Run 062 on 8/18/10 3:13:56pm resulting in 367hp and 342tq
2. Run 061 on 8/18/10 3:08:52pm resulting in 376.5hp and 347.1tq

Why are the two runs only minutes apart for a baseline/results comparison?

And finally, considering we now have 3 people with 40+whp gains and I've confirmed on a dynojet as well as the dynapak it's safe to say you are fine and you do have the additional hp that you are worried that you do not have. Just chill man and enjoy the headers.
 

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why i have less power in second run simple my friend

we call that heat soak.. pretty simple

my question is why i HAVE the same TQ than you and your friend but you have more than 410 HP!!

and yes i am happy with my header i never say the opposite , they only thing i say is i am sad about my dyno # (hp) the torque is ok

eric
 

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Yes, it is high for a stock car. We all took a double take and even re dyno'ed several times to make sure it's not a fluke. This run was at operating temp to. It did drop a little like normal when heat soaked after 4 or 5 back to back runs, but it was still higher than what we have seen for a stock F. Guess this guy got lucky with a well put together motor? No other explanation.
Thanks for posting these results!

I will have similar results for my stock exhaust now being used with your headers Friday afternoon. Results will be from the dynojet. I'm hoping I haven't lost too much power now that I've seen these results, but will let you all know soon enough. What I'd like to see from you guys next is a full exhaust similar to the JoeZ exhaust incorporating high flow cats. :D

Whose car is this btw?
 

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my question is why i HAVE the same TQ than you and your friend but you have more than 410 HP!!

and yes i am happy with my header i never say the opposite , they only thing i say is i am sad about my dyno # (hp) the torque is ok

eric
On the dynojet I did not hit 400whp either. ;)
http://www.clublexus.com/forums/5575514-post124.html

From what I have experienced the Dynapack reads higher HP numbers and lower TQ than Dynojet, but as SLAY said, "The difference in Hp could be consistent with the readings of other dynos. The importance here is the power gained and the consistent pulls shown in the video."
 

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to be honest the only thing i forgot is my a/c on this run (376 hp)

i am not sure if this is a big difference in # result
 

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Awesome!

So 34 with the headers alone. How does the interior with headers only sound compared to stock? I wonder what that freak ISF will make with exhaust and intake added.

Thanks,

Tom
It sounds stock to me, but with a slightly more deep sounding idle and startup and a bit more sound in the higher revs. You can also hear the cam adjustments at startup wheras with the stock manifold you could not.

I miss my JOEZ exhaust and can't wait to get it back on the car. :D
 

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to be honest the only thing i forgot is my a/c on this run (376 hp)

i am not sure if this is a big difference in # result
Actually we found 15-20whp difference with the AC off. That is your problem Eric!

Ok, i'm done flooding this thread now and I apologize, but I just like to see problems resolved and the facts straight.
 
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