Any JB4 regrets? Issues? additional thoughts?

[Emira Fan]

[. also will install draggy today before the test and will do map0/1/2 runs]

Nice, Draggy result are where the proverbially rubber meets the road.

 

[David s]

Today me and my friend are planning to do more tests with the jb4 as last one was a bit disappointing. Will have the logs send over them and analyse.. also will install draggy today before the test and will do map0/1/2 runs

Looking forward to see how you go. The emira contacts I have all confirmed with me significant improvement in performance since the JB4. It’s not imaginary. If it doesn’t feel like a big improvement, then there’s likely something wrong with the unit and I’d be contacting Berger. I’ll be putting mine on the track in a couple of weeks with Lotus cars (our lotus dealer) to test my car around the track to see if it results in reduced lap times. By the feel of it currently. The pull out of the apex should produce a much more balanced exit.

 

[virtualmacho]

All you folks are going to need new rear tires soon!
Looking foward to seeing quantified results in addition to impressions, as I am still weighing my options...

 

[TFS]

See my post in the jb4 section for the test results

 

[VF Tuner]

Looking forward to see how you go. The emira contacts I have all confirmed with me significant improvement in performance since the JB4. It’s not imaginary. If it doesn’t feel like a big improvement, then there’s likely something wrong with the unit and I’d be contacting Berger. I’ll be putting mine on the track in a couple of weeks with Lotus cars (our lotus dealer) to test my car around the track to see if it results in reduced lap times. By the feel of it currently. The pull out of the apex should produce a much more balanced exit.

it would be very important to ensure which is which (i4 vs v6) as I'd bet majority of people with issues are v6 folks.

 

[TFS]

v6 indeed

 

[David s]

it would be very important to ensure which is which (i4 vs v6) as I'd bet majority of people with issues are v6 folks.

V6.Working ok for me.

 

[Eagle7]

V6.Working ok for me.

Same.

 

[Bond_42]

V6 Manual here. Works great zero issues. This is my 3rd JB4 as I’ve had them on other vehicles before this. Never an issue

 

[virtualmacho]

JB4 working fine in my V6 manual

 

[TechShizzle]

Rec'd my JB4 yesterday. Installed it in less than an hour and works flawlessly. 24 V6 Manual.

 

[allenyao09]

I've been running the JB4 for a couple of weeks now and pretty happy with it. Installation of JB4 is very easy, but the mounting bracket somehow refused to go back in place so it took me a while. I'm only running map1 with 92 pump gas available here but I can tell a noticeable difference in mid-range torque from my butt dyno. I bought a used one for $500 and it's probably the best bang for the buck to improve driving experience.

 

[drask25]

I've been running the JB4 for a couple of weeks now and pretty happy with it. Installation of JB4 is very easy, but the mounting bracket somehow refused to go back in place so it took me a while. I'm only running map1 with 92 pump gas available here but I can tell a noticeable difference in mid-range torque from my butt dyno. I bought a used one for $500 and it's probably the best bang for the buck to improve driving experience.

Same situation I had. When I unscrew two bolts to install the mounting bracket, it’s off by about 1/4 inch. I had to unscrew two bolts next to the coolant to align the holes

 

[allenyao09]

Same situation I had. When I unscrew two bolts to install the mounting bracket, it’s off by about 1/4 inch. I had to unscrew two bolts next to the coolant to align the holes

I managed to put them back without removing other components but that was very difficult and I struggled for like half an hour

 

[drask25]

I managed to put them back without removing other components but that was very difficult and I struggled for like half an hour

I can imagine you did put yourself in the trunk and go back to the side of the car countless times

 

[musky29]

i haven't been keeping up any other feedback just my experience was bad soon after installing it

So what happened?

 

[David s]

So what happened?

Probably got booked for doing a burnout at the traffic lights.