Completed R&D on PTS Dual Exhaust System Joe Z series & Joe Z Intake for IS-F
01-07-09, 09:14 PM
#106
Pole Position
Believe it or not, the IS-F is louder than a Z-06. I drove them back to back, and the IS-F is a LOT louder with the stock exhaust. My friend said it makes his Z-06 sound like a Lexus.
If it's louder, then it's not going to be my cup of tea. Damn.
If it's louder, then it's not going to be my cup of tea. Damn.
01-08-09, 02:46 PM
#107
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What kind of dyno was that, and has anyone posted objective 3rd party results of their own? It's obviously not a DJ which would explain why the numbers are all over the place.
Seems like the baseline numbers of 333/327rw SAE are quite low compared to the other stock dyno's we've seen.
Seems like the baseline numbers of 333/327rw SAE are quite low compared to the other stock dyno's we've seen.
The IS-F from the factory is rated with the following:
- Horsepower (Hp) 416 @ 6,600 RPM
- Torque (lb-ft) 371 @ 5,200 RPM
- Maximum Engine Speed (redline) 6,800 RPM
- 5th gear ratio = 1.231
- 6th gear ratio = 1.000
All Dyno's of the IS-F R&D car we used, were done Independently on a DynoJet, by SP Engineering here in So Cal....
- Which means when we go there, we hand them the key, their dyno tech tests the car and we stand by & watch. Which makes the results objective.
The 6th gear baseline run this IS-F achieved was 333 Rwhp & 336 Tq -> SAE Corrected
(Rwhp = rear wheel horse power)
As others have stated, many DYNO testing machines across the USA and abroad will vary in many ways... Even when the same brand is used.
The same can be applied from one IS-F to another.
For example here is "Automobile Magazine's" independent dyno test of the IS-F, from earlier last year in CA where only 91 Octane gas is available.
Coincidently, it seems they achieved 333 Rwhp as well.
The gains we posted for the exhaust only, were again approx. 22 rwhp on our R&D IS-F.
I will & do expect that number to vary from other IS-F's and Dyno's across the spectrum.
Unfortunately, it is not fair to others if you chose to post misinformation in other threads..
Thank You
- Joe Z
To All:
Please read the entire thread before posting a question or making a statement. There is a good chance your answer is on one of these pages or posts. Thank you
01-08-09, 02:54 PM
#108
Looks like I missed a little bit of fun... But let me help clarify a few things...
The IS-F from the factory is rated with the following:
- Horsepower (Hp) 416 @ 6,600 RPM
- Torque (lb-ft) 371 @ 5,200 RPM
- Maximum Engine Speed (redline) 6,800 RPM
- 5th gear ratio = 1.231
- 6th gear ratio = 1.000
All Dyno's of the IS-F R&D car we used, were done Independently on a DynoJet, by SP Engineering here in So Cal....
- Which means when we go there, we hand them the key, their dyno tech tests the car and we stand by & watch. Which makes the results objective.
The 6th gear baseline run this IS-F achieved was 333 Rwhp & 336 Tq -> SAE Corrected
(Rwhp = rear wheel horse power)
As others have stated, many DYNO testing machines across the USA and abroad will vary in many ways... Even when the same brand is used.
The same can be applied from one IS-F to another.
For example here is "Automobile Magazine's" independent dyno test of the IS-F, from earlier last year in CA where only 91 Octane gas is available.
Coincidently, it seems they achieved 333 Rwhp as well.
The gains we posted for the exhaust only, were again approx. 22 rwhp on our R&D IS-F.
I will & do expect that number to vary from other IS-F's and Dyno's across the spectrum.
Unfortunately, it is not fair to others if you chose to post misinformation in other threads..
Thank You
- Joe Z
To All:
Please read the entire thread before posting a question or making a statement. There is a good chance your answer is on one of these pages or posts. Thank you
The IS-F from the factory is rated with the following:
- Horsepower (Hp) 416 @ 6,600 RPM
- Torque (lb-ft) 371 @ 5,200 RPM
- Maximum Engine Speed (redline) 6,800 RPM
- 5th gear ratio = 1.231
- 6th gear ratio = 1.000
All Dyno's of the IS-F R&D car we used, were done Independently on a DynoJet, by SP Engineering here in So Cal....
- Which means when we go there, we hand them the key, their dyno tech tests the car and we stand by & watch. Which makes the results objective.
The 6th gear baseline run this IS-F achieved was 333 Rwhp & 336 Tq -> SAE Corrected
(Rwhp = rear wheel horse power)
As others have stated, many DYNO testing machines across the USA and abroad will vary in many ways... Even when the same brand is used.
The same can be applied from one IS-F to another.
For example here is "Automobile Magazine's" independent dyno test of the IS-F, from earlier last year in CA where only 91 Octane gas is available.
Coincidently, it seems they achieved 333 Rwhp as well.
The gains we posted for the exhaust only, were again approx. 22 rwhp on our R&D IS-F.
I will & do expect that number to vary from other IS-F's and Dyno's across the spectrum.
Unfortunately, it is not fair to others if you chose to post misinformation in other threads..
Thank You
- Joe Z
To All:
Please read the entire thread before posting a question or making a statement. There is a good chance your answer is on one of these pages or posts. Thank you
01-11-09, 07:08 PM
#111
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Looks like I missed a little bit of fun... But let me help clarify a few things...
The IS-F from the factory is rated with the following:
- Horsepower (Hp) 416 @ 6,600 RPM
- Torque (lb-ft) 371 @ 5,200 RPM
- Maximum Engine Speed (redline) 6,800 RPM
- 5th gear ratio = 1.231
- 6th gear ratio = 1.000
All Dyno's of the IS-F R&D car we used, were done Independently on a DynoJet, by SP Engineering here in So Cal....
- Which means when we go there, we hand them the key, their dyno tech tests the car and we stand by & watch. Which makes the results objective.
The 6th gear baseline run this IS-F achieved was 333 Rwhp & 336 Tq -> SAE Corrected
(Rwhp = rear wheel horse power)
As others have stated, many DYNO testing machines across the USA and abroad will vary in many ways... Even when the same brand is used.
The same can be applied from one IS-F to another.
For example here is "Automobile Magazine's" independent dyno test of the IS-F, from earlier last year in CA where only 91 Octane gas is available.
Coincidently, it seems they achieved 333 Rwhp as well.
The gains we posted for the exhaust only, were again approx. 22 rwhp on our R&D IS-F.
I will & do expect that number to vary from other IS-F's and Dyno's across the spectrum.
Unfortunately, it is not fair to others if you chose to post misinformation in other threads..
Thank You
- Joe Z
To All:
Please read the entire thread before posting a question or making a statement. There is a good chance your answer is on one of these pages or posts. Thank you
The IS-F from the factory is rated with the following:
- Horsepower (Hp) 416 @ 6,600 RPM
- Torque (lb-ft) 371 @ 5,200 RPM
- Maximum Engine Speed (redline) 6,800 RPM
- 5th gear ratio = 1.231
- 6th gear ratio = 1.000
All Dyno's of the IS-F R&D car we used, were done Independently on a DynoJet, by SP Engineering here in So Cal....
- Which means when we go there, we hand them the key, their dyno tech tests the car and we stand by & watch. Which makes the results objective.
The 6th gear baseline run this IS-F achieved was 333 Rwhp & 336 Tq -> SAE Corrected
(Rwhp = rear wheel horse power)
As others have stated, many DYNO testing machines across the USA and abroad will vary in many ways... Even when the same brand is used.
The same can be applied from one IS-F to another.
For example here is "Automobile Magazine's" independent dyno test of the IS-F, from earlier last year in CA where only 91 Octane gas is available.
Coincidently, it seems they achieved 333 Rwhp as well.
The gains we posted for the exhaust only, were again approx. 22 rwhp on our R&D IS-F.
I will & do expect that number to vary from other IS-F's and Dyno's across the spectrum.
Unfortunately, it is not fair to others if you chose to post misinformation in other threads..
Thank You
- Joe Z
To All:
Please read the entire thread before posting a question or making a statement. There is a good chance your answer is on one of these pages or posts. Thank you
All you had to say was "91 octane", but the dyno info and rwhp explanation was great thanks.
Last I checked questions weren't considered misinformation. 
That was far from an objective test (though I don't doubt the numbers are real), regardless nice job. I can't wait to see what a full exhaust including longtubes will gain. Seems like breaking the 400rw barrier is going to happen sooner than later with an IS-F
I wonder what a MHP v2 ECU/TCU, Joe Z exhaust equipped F would make on 93/100. Might be close...
Last edited by MHP; 01-12-09 at 12:02 AM.
01-28-09, 07:11 PM
#115
it's coming soon guys! you guys better thank me and Joe since I've been meeting with him to make sure the Lexus IS-F JoeZ intake pipe is TOP NOTCH!!! haha...it isn't as easy as making a tube...you gotta make it RIGHT and idiot proof...haha 
01-28-09, 08:10 PM
#116
Lexus Champion
I can't wait to get mine
01-29-09, 06:57 AM
#118
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Join Date: Sep 2008
Location: california
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Looks like I missed a little bit of fun... But let me help clarify a few things...
The IS-F from the factory is rated with the following:
- Horsepower (Hp) 416 @ 6,600 RPM
- Torque (lb-ft) 371 @ 5,200 RPM
- Maximum Engine Speed (redline) 6,800 RPM
- 5th gear ratio = 1.231
- 6th gear ratio = 1.000
All Dyno's of the IS-F R&D car we used, were done Independently on a DynoJet, by SP Engineering here in So Cal....
- Which means when we go there, we hand them the key, their dyno tech tests the car and we stand by & watch. Which makes the results objective.
The 6th gear baseline run this IS-F achieved was 333 Rwhp & 336 Tq -> SAE Corrected
(Rwhp = rear wheel horse power)
As others have stated, many DYNO testing machines across the USA and abroad will vary in many ways... Even when the same brand is used.
The same can be applied from one IS-F to another.
For example here is "Automobile Magazine's" independent dyno test of the IS-F, from earlier last year in CA where only 91 Octane gas is available.
Coincidently, it seems they achieved 333 Rwhp as well.
The gains we posted for the exhaust only, were again approx. 22 rwhp on our R&D IS-F.
I will & do expect that number to vary from other IS-F's and Dyno's across the spectrum.
Unfortunately, it is not fair to others if you chose to post misinformation in other threads..
Thank You
- Joe Z
To All:
Please read the entire thread before posting a question or making a statement. There is a good chance your answer is on one of these pages or posts. Thank you
The IS-F from the factory is rated with the following:
- Horsepower (Hp) 416 @ 6,600 RPM
- Torque (lb-ft) 371 @ 5,200 RPM
- Maximum Engine Speed (redline) 6,800 RPM
- 5th gear ratio = 1.231
- 6th gear ratio = 1.000
All Dyno's of the IS-F R&D car we used, were done Independently on a DynoJet, by SP Engineering here in So Cal....
- Which means when we go there, we hand them the key, their dyno tech tests the car and we stand by & watch. Which makes the results objective.
The 6th gear baseline run this IS-F achieved was 333 Rwhp & 336 Tq -> SAE Corrected
(Rwhp = rear wheel horse power)
As others have stated, many DYNO testing machines across the USA and abroad will vary in many ways... Even when the same brand is used.
The same can be applied from one IS-F to another.
For example here is "Automobile Magazine's" independent dyno test of the IS-F, from earlier last year in CA where only 91 Octane gas is available.
Coincidently, it seems they achieved 333 Rwhp as well.
The gains we posted for the exhaust only, were again approx. 22 rwhp on our R&D IS-F.
I will & do expect that number to vary from other IS-F's and Dyno's across the spectrum.
Unfortunately, it is not fair to others if you chose to post misinformation in other threads..
Thank You
- Joe Z
To All:
Please read the entire thread before posting a question or making a statement. There is a good chance your answer is on one of these pages or posts. Thank you
Joe Z can you let me know where is your shop. I'm also interested in a mod intake. Thanks again.
01-29-09, 07:09 AM
#119
What's really great about this exhaust on the IS-F is not just the peak rwhp posted of approx 22, but there are gains throughout the curve that are greater than 22 such as around 5700rpm there is approx 39 rwhp difference over stock!
Best bang for the buck on the IS-F is certainly this exhaust.
Best bang for the buck on the IS-F is certainly this exhaust.