Interested in seeing before and after dynos completed on a stock IS350..
This will give a better read out of actual gains from just the headers..
Regards,
Joe Z
__________________
2008 IS-F ~ Smoky Granite Mica ~ Black Leather ~ NAV ~ ML
Joe Z Intake - Designed by an Enthusiast for Enthusiasts
Performance Tube Systems Full True Dual 304 SS Exhaust
Five Axis S5:F 19x8.5 & 19x9.5 ~ Yokohama Advan Sport 235-35 & 265-30
D2 Racing Sport Coils ~ Optic Blue AeroTect ~ JDM Fogs ~ JDM Visors
Race Ready......
Did you try the dyno with a stock exhaust? That full exhaust may have boosted the hp a bit more.
This.
When I saw 265 "before" I kinda assumed it was otherwise stock since I'm pretty sure I've seen stock 350s dyno that.
Obviously gains are gains, but if uncorking decent power from these headers requires an extra +1k exhaust behind it that obviously changes the bang/buck math a touch.
What I'd love to see is a before/after dyno on a bone stock 2IS changing nothing but the headers (and ideally leaving the secondary cats in place so that, while still illegal, the car would still at least stand a chance of fooling a visual inspection)
__________________
2008 IS350 - Black Sapphire Pearl/Cashmere - Sport Package, Mark Levinson (no nav), XM, Tanabe Exhaust, F-Sport Intake and Sway Bars
Nice gains! Now I wish even more that we could have the 350 and not the 250.
You should make it out to a meet sometime, I'd love to check out your IS.
Thanks! Let me know next time you all are meeting up and I will try to make it.
Quote:
Originally Posted by phil9892
Any videos by chance?
Yeah, I'm waiting for them to be sent to me though.
Quote:
Originally Posted by Joe Z
This is Great news...!!
Interested in seeing before and after dynos completed on a stock IS350..
This will give a better read out of actual gains from just the headers..
Regards,
Joe Z
Quote:
Originally Posted by 2slow
Did you try the dyno with a stock exhaust? That full exhaust may have boosted the hp a bit more.
Quote:
Originally Posted by Kurtz
This.
When I saw 265 "before" I kinda assumed it was otherwise stock since I'm pretty sure I've seen stock 350s dyno that.
Obviously gains are gains, but if uncorking decent power from these headers requires an extra +1k exhaust behind it that obviously changes the bang/buck math a touch.
What I'd love to see is a before/after dyno on a bone stock 2IS changing nothing but the headers (and ideally leaving the secondary cats in place so that, while still illegal, the car would still at least stand a chance of fooling a visual inspection)
Unfortunately we were unable to dyno it stock as I had done my mods already. Based on specs and design, the gains should be around the same. Nonetheless, I believe they are going to design a full header/exhaust system as well, which would allow someone to take full advantage of bolting on ~30rwhp for a lot less money than forced induction.
Also, keep in mind we used a Mustang Dyno, which typically reads lower than Dynojets. The car would probably dyno much closer to 300 on a Dynojet, however a question of accuracy then arises.
__________________ JB
'07 Obsidian Black/Black IS350X (X-package (chrome 5-spoke wheels), premium package, preferred package, nav, front lip spoiler, rear spoiler, full custom exhaust, F-Sport cold air intake, PPE headers, 286rwhp/246ft.lbs)
'97 Silver/Black Prelude Type SH (AEM Cold Air Intake) - SOLD
Also, keep in mind we used a Mustang Dyno, which typically reads lower than Dynojets. The car would probably dyno much closer to 300 on a Dynojet, however a question of accuracy then arises.
I think as long as all the pulls are done on the same machine, under similar conditions, the numbers will be pretty accurate.
Unfortunately we were unable to dyno it stock as I had done my mods already. Based on specs and design, the gains should be around the same. Nonetheless, I believe they are going to design a full header/exhaust system as well, which would allow someone to take full advantage of bolting on ~30rwhp for a lot less money than forced induction.
Also, keep in mind we used a Mustang Dyno, which typically reads lower than Dynojets. The car would probably dyno much closer to 300 on a Dynojet, however a question of accuracy then arises.
Seems a few of us are all suggesting the same thing here...
Start with stock / base dynos.. Then dyno just the header to see the gains..
Then dyno with a custom exhaust to see the gains..
or if they make another full system, dyno that after all the other numbers have been properly obtained..
Just a suggestion on "how to" properly obtain the correct data.
**Might be time for them to get a stock IS350 in there hands, to complete the Dyno R&D on just the headers.
Regards,
Joe Z
__________________
2008 IS-F ~ Smoky Granite Mica ~ Black Leather ~ NAV ~ ML
Joe Z Intake - Designed by an Enthusiast for Enthusiasts
Performance Tube Systems Full True Dual 304 SS Exhaust
Five Axis S5:F 19x8.5 & 19x9.5 ~ Yokohama Advan Sport 235-35 & 265-30
D2 Racing Sport Coils ~ Optic Blue AeroTect ~ JDM Fogs ~ JDM Visors
Race Ready......
the gains are at the top end of the rpm range. In the midrange(4K-5K), not much gain. Do you think your exhaust setup has something to do with the results????
I'm just trying to figure if the type of exhaust will affect the % gain in rwhp over a car without the headers.
Hybrid Mode
