designo

iTrader: (6)

Most of you know my story! I have been around for the past year or so, and I've managed to rack up alot of things in that period of time!

So, picked up a brand spanking new 2009 GS460 last summer! Drove it for 10000 miles and then dynoed it!

Results were:



Then I got rid of the stock axle back exhaust and replaced it with the lighter higher flowing Tanabe Medallion! I also got rid of the secondary cats and replaced them with the lighter high flowing Invidia mid pipes!

Yanked out the stock air filter panel and replaced it with the Tom's high flow filter.

A few suspension and wheel mods later, and I am ready to dyno again to see if the hardware made any difference!

I am currently running on Torco 100 ( which is 97 US Octane ) and seeing what the dyno results will tell us as far as air/fuel ratio is concerned!

As you guys are aware, Middle East GS460's are detuned to 322hp from the normal 342hp. And I beleive that was done through running the a/f ratio rich! The dyno result confirmed it! Normal A/F ratio should be 12 to 13. My car is running below 10!

So where does that leave me? Well.... it leaves me with one more mission! To attempt something no one has ever tried, at least not a 2009 model 3GS GS460!!!

I am leaning the car out and seeing if I can get power back and more!

And it's time!!!!!! Woooooooooohoooo! STAY TUNED GUYS!!!!

passnu2

iTrader: (33)

GS350Lexus

iTrader: (5)

LIMS407

oh lord,,,cant wait,,,

KevGS460ML

Oh, darn, I was hoping you'd get a dyno before the AFC so we can see what the mid pipe, and muffler did to your HP. Any chance of that?

*Batman*

Yes that's what I want to know too.

designo

iTrader: (6)

Ofcourse, dyno first, tune immediately afterwards on the same night baby! I'm gonna tune it on the dyno all night!

*Batman*

Excellent. I'm tuned in and watching closely.

designo

iTrader: (6)

OK boys, dyno has been booked all to ourselves for friday night! I'm so excited yet very nervous about what might happen! I've got a very talented Apexi Super AFC expert whos gonna work on my car! Before doing any dyno run, he's gonna runa a wide band test on my car to triple confirm my A/F figures!

I hope i dont blow the engine up! LOL

*Batman*

Friday night? So this is what you're doing on New Year's Eve.

Alexus_300

iTrader: (4)

This is great news. Where do you plan on mounting the wideband A/F sensor because from my experience of tuning cars, mounting it at the tail pipe will yield a AFR that is roughly .3-.5 of a point from what it really is.

jre002

I'm sure you know already that leaning out a car too much is an easy way to blow the engine, but good luck with your project. If this goes correctly you should see a decent gain!

xianan87

interesting.. can't wait to see the results

GS350Lexus

iTrader: (5)

It should hold up, because LS460 has 20 more horses with it being on 13.

rominl

iTrader: (4)

sweet! this is going to be a cool thread. keep us posted along your mission!