What ECU tune would be better if anyone ever tried any of them:
VR Tuned Gearbox Tuning Lexus IS350 | IS250
OR
RR RACING LEXUS IS350 ECU UPGRADE TUNE

I'm split on which one to choose and don't really know which one is better than the other or if they're both relatively similar to each other in terms of HP gains

PLEASE HELP !

 

Since you own a 250 the RR racing tune isn't even a factor atm.

 

So getting the VR one is the only option ?

 

TTFS offers a tune for the IS250 - gains of about 15 whp - but you'll have to send in your ECU

 

Would you happen to know how long it will take for them to do it if sent in ECU? Thats the downside since I daily my IS so removing my ECU and sending it in can be quite a problem. Do you know any other places that have ECU tunes for 2IS

 

You don't have to send in your ECU anymore, TTFS can do it handheld with an OBD tool. Best connect with them in their vendor thread.

 

Alright that sounds good, has anyone ever tried TTFS tuning and the VR ecu tuning? Also link to their thread

 

Send us a pm if we can answer any questions for you, we have posted some results in our threads.

 

Wow that's really good to know! Until RR racing gets the IS250 tune I might have to really consider this option for the future.