SPearson79

Besides me...

R/T Tuning/Eurocharged
ABT
Eurocustoms


APR Claims 60 and I've personally seen more than that from their flashes...

Many NA cars have pretty crazy gains over factory software. Others are a struggle.

The 911 Carreras are always lucky to get 20hp :/ I have spent a lot of time trying very hard to get more than 20 or 25 hp from those and I just havent found it.

Bigjon3475

iTrader: (2)

I could have just said we're all dying to get our hands on this... Better?

2010ISFU

ISF HP = 416 - 15% = whp (354)

So pretty much with I/E your car did not gain any WHP? That seem kinda strange but i guess not all dyno are the same?

RCB

iTrader: (18)

I'll have a DIY on removing the ECU posted up later today in another thread and I'll post a link to it here.
It seems as though it may finally come in handy for everyone!

giblet

I think some users remove the secondary cats and add a x pipe on the C63 but the gains are due to the engine being detuned from factory. For all we know Lexus could have held back power. I guess we will see with the next few cars that RR tweak.

RSXiMUS

iTrader: (7)

Then again you have to realize the S65 M3 V8 is pretty strung out from the factory. They dyno stock similar to us but they are down 1 full liter of displacement. They need fancy goodies to produce 414bhp while working with 4 liters like revving pass 8000 and individual throttle bodies.

You can tell Lexus left a lot on the table for us, I mean 50+ WHP gains just from freeing up the exhaust system. No reason to believe they weren't extra conservative with the factory maps.

SPearson79

On SAE correction its common for a car to look underpowered... Just had a Aston Vantage V8 only put down 306hp. Dyno is a tool for measuring changes in a relatively safe(er) environment - its not a drag strip

2010ISFU

I dont understand.. " I mean 50+ WHP gains just from freeing up the exhaust system" but isnt that what RR did without the tune?

SPearson79

Those runs are with no changes to the car... Same exhaust, same car, same dyno, same little fat guy driving it.

dmk08

I'm not sure I agree considering you can get them to over 600whp on the stock bottom end w/ a blower. The biggest advantage to the extra L is TQ IMO.

Anyway even tho I'm skeptical I hope this is true. I used to own an ISF and the no tuning/FI options are what caused me to move away. I wouldn't move back now but good for more competition.

ISF4life

iTrader: (30)

LOLZ, FOR THOSE ISF'S OG WE ALL HAVE BEEN WAITING SINCE THE BEGINNING WHEN THE ISF 1ST LAUNCHED . SOME OF US WERE LUCK ENOUGH TO GOT INVITED TO THE 1ST ISF DEBUT HERE IN THE U.S AT FONTANA SPEEDWAY AND MOST OF US FALLING IN LOVE WITH THE F . AS THE SAME WITH LFA DEBUT TOO LOLZ WE DIDNT GET TO DRIVE IT BUT SITTING SHOTGUN AND LET THE PROFESSIONAL DRIVEN IT WAS PRETTY AWESOME SO THIS IS HUGE FOR THE F COMMUNITIES

RSXiMUS

iTrader: (7)

Forced induction is a whole other ballgame. We're talking about tuning a naturally aspirated motor. The S2000 F20/F22C is pretty strung out from the factory also with the stock components, not much to be extracted from bolt on breathing mods and tuning. It's a similar story with the S65 Powered M3.

You can also go forced induction with the S2000 and make 500+ WHP on the stock bottom.

tas02

iTrader: (2)

Count me in. Looking forward to seeing results w/headers. Time to get the torsen installed.
Thanks Rafi for bringing this to the community.

peacepawn

Hopefully we can get flex fuel in the equation and some fi

MileHIFcar

Does this mean your going to get rid of your SARD ECU tune and get the RR-Racing tune since the SARD didn't prove to have anything this beneficial?

In your opinion what was Sard/Novel doing wrong in attempting to tune the ISF (North American market versions anyway)??