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Does anyone have this on the GS? I'm considering getting it for my awd. People on the IS board report good results, I just wonder if it is worth the $500. I'd probably increase the redline to 7200, I don't know how much extra stress it puts on the engine but it would be nice to have.
I just installed the RR-Racing tune earlier this week on my GS and so far I Love it. The increased rev limit is great the car pulls all the way to 7200 with no drop in power. I think it was worth it.
I just installed the RR-Racing tune earlier this week on my GS and so far I Love it. The increased rev limit is great the car pulls all the way to 7200 with no drop in power. I think it was worth it.
How is the throttle response with the tune?
Does it make it anymore thirsty in regular driving? Don't mind it gulping more when I'm having fun, but still need to keep things in control for the regular commute with this thing..
Don't you wonder what Lexus would say if someone brought their car in for major engine repair and the technician sees that the engine had exceeded the stock rev limiter and had gotten up to 7,200 RPMs?
Don't you wonder what Lexus would say if someone brought their car in for major engine repair and the technician sees that the engine had exceeded the stock rev limiter and had gotten up to 7,200 RPMs?
Hmmm...
Not really, my car is almost out of warranty. They also recommend flashing the stock file back when taking it to the dealer for service which I plan to do, it takes 5 minutes.
[QUOTE=er34;10034001]How is the throttle response with the tune? It seems throttle response is better in sport mode, in normal or eco I cannot tell a change.
Does it make it anymore thirsty in regular driving? Don't mind it gulping more when I'm having fun, but still need to keep things in control for the regular commute with this thing. I have only had the tune since Tuesday and I've prob driven only 120 miles but in this short amount of time I haven't noticed any difference.
Wanted to update this thread. Finally got my tune loaded on the car a little bit ago. Process was pretty straight forward, longest portion was getting the tune done once I sent my stock one, but still just a few days. I definitely have a nice improvement I feel on the car. I just tested the increased redline at 7200 and it definitely works. It was a little strange because I knew the tone of the redline before and it sounded different going up to 7200 now. I took it around some of the usual areas with alot of turns and elevation changes and it handled it great. With the Apexi accel on red and sport mode its very fun to drive. I believe there was a adjustment in the tune already for the throttle response so the Apexi compounds how responsive the car is. Theres literally 0 throttle lag with the setup, I can feel it pulling alot harder now. Power is smoother too, when accelerating and shifting. All around the car just feels great, between the upgraded steering wheel and responsiveness. I need to drive my buddies 135i that has DCT to compare the power and shifting speed. If you guys have any questions holler, not sure how many 4gs owners have had the tune done yet.
Wanted to update this thread. Finally got my tune loaded on the car a little bit ago. Process was pretty straight forward, longest portion was getting the tune done once I sent my stock one, but still just a few days. I definitely have a nice improvement I feel on the car. I just tested the increased redline at 7200 and it definitely works. It was a little strange because I knew the tone of the redline before and it sounded different going up to 7200 now. I took it around some of the usual areas with alot of turns and elevation changes and it handled it great. With the Apexi accel on red and sport mode its very fun to drive. I believe there was a adjustment in the tune already for the throttle response so the Apexi compounds how responsive the car is. Theres literally 0 throttle lag with the setup, I can feel it pulling alot harder now. Power is smoother too, when accelerating and shifting. All around the car just feels great, between the upgraded steering wheel and responsiveness. I need to drive my buddies 135i that has DCT to compare the power and shifting speed. If you guys have any questions holler, not sure how many 4gs owners have had the tune done yet.
You get sent the OBD unit, then you do a read on your stock ECU and send it to RR Racing. Then I got the tune back for my mapping/ECU and then I load it on to the device then flash it.
You get sent the OBD unit, then you do a read on your stock ECU and send it to RR Racing. Then I got the tune back for my mapping/ECU and then I load it on to the device then flash it.
Ah I see. I thought the unit was pre-loaded with a tune. This is through email or do you have to send back the unit?
Ah I see. I thought the unit was pre-loaded with a tune. This is through email or do you have to send back the unit?
Yeah they email the tune and then I just upload to the device. It may not be that complicated now because I think the tune for my specific year had to be made, its likely already uploaded to the device manufacture so when you connect the device it will pull down the new tunes. I think I was one of the first to get a gs350 tune and I had awd if that made a difference with the ones they had made.
11-16-17, 01:19 PM
RR Racing GS350 Tune
