JB4 Thread for Lotus Emira AMG i4 (M139 Engine) – Tuning, Setup, Results & Support

[F1 SML8R]

@Kaz As always, get'n it done! @docron Hurry, you're falling behind!

 

[Milk242]

I bought the pre-bunged Weistec charge pipe to save some time, here is the pipe compared to stock. It's always post intercooler with methanol injection to not only chemically cool but to clean the combustion chamber, valves, piston heads. I am using the pump and tank from Snow Performance, and the rest of the kit and electronics comes from Burger Motorsports as the JB4 will control the system. So I'll be able to run stock, 91, 93 etc and also those maps + methanol (super handy) which means if I'm in a trip and don't want to bring methanol I can just run whatever map.
View attachment 68009

Wait I thought this was post intercooler?

 

[Kaz]

Wait I thought this was post intercooler?

View attachment 68013

I'll ask shop today where they are putting the injector - wonder why Weistec has it pre, maybe because there isn't enough length post and all the sensors - will start different thread for the build so it doesn't clog up this JB4 thread

 

[HankRS225]

360bhp I4 after JB4: (using Ron98 aka 93AKI)
Map1: +37whp, +36NM
Map2: +53whp, +48NM
Map3: +56whp, +65NM
Map4 above: no test

Ron98 is not enough for Map3, the torque difference only works in the low rpm range (3-4.5k rpm)
Anyway, now the car is blistering fast, definely worth it.

 

[TurboTambo]

I bought the pre-bunged Weistec charge pipe to save some time, here is the pipe compared to stock. It's always post intercooler with methanol injection to not only chemically cool but to clean the combustion chamber, valves, piston heads. I am using the pump and tank from Snow Performance, and the rest of the kit and electronics comes from Burger Motorsports as the JB4 will control the system. So I'll be able to run stock, 91, 93 etc and also those maps + methanol (super handy) which means if I'm in a trip and don't want to bring methanol I can just run whatever map.
View attachment 68009

That pipe has to be worth a few extra HP on its own.

 

[Lotus F1]

360bhp I4 after JB4: (using Ron98 aka 93AKI)
Map1: +37whp, +36NM
Map2: +53whp, +48NM
Map3: +56whp, +65NM
Map4 above: no test

Ron98 is not enough for Map3, the torque difference only works in the low rpm range (3-4.5k rpm)
Anyway, now the car is blistering fast, definely worth it.

Is this your own independent dyno testing?