![]() I have noticed that I really rely on them and it's always good to know that the turbos are working as they should. One thing I have noticed in the last week is how much I miss the dash gauges with the JB4. It's worth noting that I haven't been using methanol with my JB4 for the couple of weeks prior to installing the Cobb so the comparisons should be fair. Luckily I managed to try the car out on a few of the dry days we had in the last week so I could compare the two. I hope to go back to the standard throttle mapping to see which of the two I prefer. I found the car to feel like standard down low and much easier to drive normally. One thing to note is that I have a manual and I tried out the linear throttle mapping as recommended by a few people on the American forums. The Cobb on the otherhand feels very different. On the flipside however, this means that the car is super responsive low down in the rev range and builds boost very quickly. When oil temperature is above 70degrees and the JB4 is active I have found that the throttle is very sensitive and takes careful modulation to prevent the car flinging itself down the road. I've driven my car with both tuning options for my daily commute so can give my thoughts on the differences between the two in ordinary conditions. If you're not comfortable with this aspect a good garage should be able to install it in under an hour. I've taken the cowling off about 20 to 30 times now for various reasons and I can take it off in about 2-3 minutes. ![]() I installed the JB4 myself quite a while ago but I found it quite easy to install and the online instructions were very thorough. The ROM on my car was recognised by the Cobb device during installation so I was able to run maps straight away and didn't have to email any files to Cobb. The Cobb has an obvious advantage here with very simple installation when compared to the JB4. ![]() I have bigger turbos and all the usual bolt on mods (exhaust, fmic, downpipes etc) but I have tried both tuning options on the same car with same mods. First of all my car is far from standard but I have been comparing similar maps betwen the two so we are talking JB4 map 2 vs Cobb Stage2 and Stage2+fmic maps. So I thought that I should share my findings to those guys on here that might be contemplating the two most popular tuning options in the UK. I've been running a JB4 for a while now and last week I received my new Cobb Accessport from AR Design (highly recommended btw).
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