Kam7001

Hey guys,

I've meant to get a tune on my slightly modded GS 350 F Sport AWD 2018.

Mods: Rims and Apexi Midpipe. I will possibly add intake and axle-back down the line.

I've been waiting for 3+ years for RR racing to come up with a tune. They have not made a tune and keep replying with "We're working on it". My question is, what are the best tune options for this car? I think D3 is best, but I don't have the experience or expertise to know for sure. Can anyone chime in on this?

bclexus

Jamie @jgscott can probably help answer your question...

jgscott

iTrader: (1)

Tune options I know of that have had positive reviews are D3, Tune by Loi, and M Force. I have the D3 and love it. The D3 Tune has diffrent options and can be changed by the user for mods added along the way. BTW: I saw some comments a few months ago that RR Racing was actually trying to have D3 do thier tunes for them, but idk for sure?

Kam7001

Thanks for responding this quick. I’ll order the D3 tune likely. Seems to be the best option.

jgscott

iTrader: (1)

Performance wise that Tune by Loi may well be the fastest of them. But the D3 has more flexibility options you can change yourself.

Kam7001

This is my daily car, the difference in modes sounds nice. But performance is something I’m a bigger fiend for. I looked up the Loi, are they a local shop? I’m on the other side of the country lol.

jgscott

iTrader: (1)

If you really want to get the power you are going to need a Intake and Axel back. Can you run aftermarket exhaust in NY?

Message Tune by Loi on FB. He will respond. I think he is in the Midwest. All the Tunes and mailed to you for you to load on your ecu.

4GS350

Does any of these tunes include the TCU tune?

RRRacing

iTrader: (1)

We've had a tune available for 2 months. I'll provide the link below.

​​​​​​https://www.rr-racing.com/RR-Racing-...ig3xxfks01.htm

GrandSedanFan

iTrader: (1)

Does this open up the ability to install superchargers on -FKS cars?

Kam7001

Hey guys,

I ordered D3 tune. Hoping it comes in this week.

jgscott

iTrader: (1)

Nice, just don't expect S/C boost increase. S/C would blow up anyway.

Kam7001

Doesn't make sense to S/C the 350 at all IMO, might as well get the GS-F at that point, will likely cost nearly the same and the GS-F will be more reliable. I wanted one for the longest time, but I'll stick with the 350 as my daily. Looking into new Miata, used Caymans, and used M2s as a secondary sports car. Hopefully, Lexus does come up with something similar before I pull the trigger on the second car. The LFR concept looks great.

I'll post few updates regarding the D3 Tune. I've been told the RR tune has poor functionality by a few Club members, hope they get their shi* figured out.

Kam7001

Got the tune and installed it. There are only 2 tune files, 93 and 93 enhanced. I installed the 93 enchanced. I thought there would be more options? I'm not sure if this factors in the Apexi midpipe as well or if i'm missing out on the hp.

Thoughts: After installing the tune, I took it for a long drive, I got around 80 miles on the tune so far. Definitely notice a difference. Car picks up easier, torque is for sure higher. Car also wants to pull 24/7.

How do I add more tune files? I tried using thier software, and it's very buggy.

jgscott

iTrader: (1)

Which Tune did you get? The pre Tune or Pro you tune yourself? I have the Pro Tune software myself. Also did you disconnect the battery after? Another recommendation is to run a tank of Octane Booster, Lucas or other good ones. It takes about 100 - 150 miles for it to fully kick in.

What are your other Mods again? Intake, Exhaust? What? Besides the Apexi Mid exhaust section?