Thinking about getting an RR tune for my 07 IS250 down the road, and wondering what you guys thought? I have only seen 1 brief review about it. Any other owners or independent dyno or track results? For me, I feel like this car needs more power in the upper rev range after 4k for passing power.

Is the RR tune additional 22whp advertised feel impressive or just "noticable" on these cars?

I've had off the shelf tunes on some of my other cars and it was kinda a mixed bag. For example, my old WRX the advertised cobb reflash brought it from 227hp to 265hp. It was noticeable, but underwhelming. It wasn't until you did downpipe + exhaust that it was impressive and that jump was a smaller advertised gain (265hp to a 285hp jump). My GTO had a predator reflash that advertised 20hp gain, but honestly felt no different.

 

no, its not like a turbo car where you can gain much more power. The tunes for the is200t for example are much more noticeable.

 

did you get he tune? i wanna do it for my is250 too lol. regretting not buying the 350 lol. have to stick with it now.

 

I have it. You'd only feel it in the upper range and that's evident by the numbers of 22whp and 5tq. If you're looking for something that's somehow going to make the IS250 quick the tune isn't it. Throttle response is much better though and more directly correlated with pedal position. Having 7200 RPM limit increase is nice, being able to hit 60 mph at the end of 2nd instead of shifting into 3rd. The tune just makes the car a bit more fun and lively. Being worth it is all dependent on you

 

Our gains have been tested through and through to make sure we aren't just selling a facade. We have been one of the only ones to crack the Lexus ECU's and make adjustments to further improve the engines. Timing, AFR's, and restrictions have been removed and adjusted as well as being able to increase the responsiveness of the car. It's worth the money for a little more pep in the 250.

In response to your other cars. WRX is boosted and gains will be dramatically different compared to an NA vehicle. In terms of your GTO, unless you got a CUSTOM tune through HP from a shop, a reflash is a joke and waste of money on most domestics. GM - HP Tuners / Ford - Diablo/SCT/HP for actual gains.

-Sean

 

RR Racing, thanks for your work on this board. I noticed some dyno sheets on your website based on the tunes, they look great. But was wondering if you had any 1/4 mile times, 0-60 tests etc? Basically real world test comparison results vs. just Dyno Numbers?

 

 

It's great getting the seat of the pants feel, but I'd love to see some real "time" (not "hp"/Dyno) gains.

I have a 3rd Gen 4runner that I supercharged, I got a 60-70 improvement of ~30% faster acceleration.. That was real hard numbers/gains in real life.
I had a BMW with a pedalbox (only changes the responsiveness of the accelerator, paid like 250 for it) and it was a hoot to drive, made the car so much more "livelier" but wouldn't result in any increase performance.
I had a BMW with a tune, paid like 400 for it. Supposedly gave it a nice HP boost (the car had a twin turbo V8). It made it feel like it was breathing easier esp. at highway speeds, but really, the pedalbox made the most difference. I don't think the tune actually made the car any faster.

 

 

I'd suggest getting some timed runs in instead. I've had BMW tunes which have shown a Dyno increase of 5-35hp..., but it resulted in pretty much 0 second change in timed runs. FWIW.

But of course, you'd need to have had the before-mods numbers for the dyno or time runs to know if it made a difference.

 

If I have the tune done, it's only active in the S mode? Also, what's the Lexus calibration file that's required?

 

i have a 06 manual is250. Also interested in the tune. So the tune is based off no additional mods such as intake and exhaust correct? After adding exhaust and intake the tune will still be optimal? Also whats the change in MPG?

May sound like stupid questions, but the only experience with a tune Ive had was on my volvo s40. The tuning company said any addition such as exhaust, turbo upgrade, intake, should be retuned so it can be dialed in.

Any answers on this and MPG would be great. If end up purchasing the tune Id also end up with a tanabe axle back and nvidia mid pipe as well.

 

You have access to the power gains in all modes, it's just that for the 7200 rpm redline you have to use manual shifting in S mode.

I haven't heard of any updates to the tune yet. As far as I know it's a stock tune. They haven't released a bolt on tune as of yet so I'm not sure how optimal it would be, but given that the exhaust and intake don't add too much HP it's possible it doesn't make too much difference? My MPG is about the same or worse now that I drive harder with the tune XD it feels good to shift at 7200rpm and given that the 22whp gain is more mid to high end it makes me want to drive faster on the highway, not that I condone that

 

Does it help with the rev hang? I know it is flywheel related but it also has to do with the ecu helping with combustion of unburnt fuel.
I also have a manual and want something to feel the car less dead after 5krpm lol

 

Can this OBD tune be used on Australian delivered 2007 IS250?

Thank you.