I regularly got near 7200rpm on my 2GR as well over the summer.

Jeff

 

I've also smashed mine to 7200rpm (with tracks days as well) for around two and a half years so no worries there.

 

Who tuned your ecu? Lol

 

Did you have your ECU tuned by SARD or Novel? Us USDM IS350 folks are only now able to enjoy the benefits of an ECU tune.

 

Yep, got mine tuned by Taku from Novel. I'm from Australia so I directly had a JDM ecu tuned and plugged in.

 

Aventur2, I read that you got it tuned for 30% e85. I am assuming this means you run your car with 30% e85 haha.. Does the car handle that from stock? I was under the impression that our cars had rubber"ish" fuel lines and that e85 would degrade them over time. Did you switch to stainless steel fuel rails or can we use e85 from stock?

 

All "modern" vehicles can safely run even E85 without issues. Hell, I ran E85 in my '92 Honda Civic with stock lines and never had any issues. You'll be fine; but you HAVE TO be tuned for it!

 

IF** you are tuned for it.... would it hurt to run straight 91 ever?

I am getting my tune on Friday, and have been considering tuning it for 30% e85, but I won't ALWAYS be able to fill up on e85 (there is no e85 pump in my hometown I go to over break). So could I tune for ethanol, and be fine running solely 91 on a few tanks?

 

To be honest, assuming it could damage the car, I wouldn't run the risk of it for the small gain you get. I'm in the same boat as you, theres a gas station that has E85 but it's a good 10-15 minutes from where I live. And if I have to keep getting gas from only that location, I'd rather just stick to a basic 91 tune.

I'm sure our cars can run pure E85 since they're making a tune for it as we speak. But again you have to be tuned for it, and putting the incorrect fuel on a tuned car can affect the engine in a bad way from what I've heard.

 

When it comes to E85, you have to be able to flow up to 30% more fuel through the motor. So even if you were "tuned" for it, more than likely you'd lean out in the higher rpms due to lack of fuel delivery. That's why an aftermarket high pressure fuel pump will be necessary...along with the tune of course.

 

I pulled the ECU last night and shipped it today. If everything goes as planned I will have it installed by 12/28. I will post my thoughts once I get some seat time.

 

^Did you ensure they'll be open during the holidays? In another thread I read they're closed until Jan.

 

Yes, I had to overnight it so they could get to it tomorrow.

 

I have a IS250 tuned to 7200 RPM, and my car is now not drivable unfortunately. I am not sure if this is directly related to the tune, or what. The timing chain is slipping once the car fully warms up. It is a god awful sound and the whole car begins to shake. I will begin taking apart the head today and let you know of the findings. Or if anyone has any thoughts or suggestions feel free to let me know!

 

I'd check out all of the timing chain components first before pulling the head. What happened? Did it just start acting up out of nowhere or was it while in the upper RPM range? Can you get a video of the car acting up?