[IusetobeJDM]

I'm just wondering if people have had any issues with this platform with basic bolt-on mods? I plan on just exhaust , jb4 , intakes and that's about it for a quick daily. I have a 6 speed manual so i plan on upgrading the clutch eventually also.


-thanks!

[gc.g80brg]

I wouldn't get jb4 or race chip... best way to use prematurely the engine components.

[Indo Rider]

Originally Posted by IusetobeJDM

I'm just wondering if people have had any issues with this platform with basic bolt-on mods? I plan on just exhaust , jb4 , intakes and that's about it for a quick daily. I have a 6 speed manual so i plan on upgrading the clutch eventually also.

-thanks!

No problems. Intake, exhaust, JB4 (map4), MT daily here. Having an ethanol sensor is good too if you plan on using E. The fuel ceiling on the stock tune is not as high as the comp cars so it's a somewhat narrow window between enough E to avoid timing corrections while not maxing out fuel trims. E27ish seems best for me mixing with 93. I'm watching the clutch threads, PTB seems to be the choice, but enough issues all around I'm not sold on a goto clutch solution yet.

[IusetobeJDM]

Originally Posted by Indo Rider

No problems. Intake, exhaust, JB4 (map4), MT daily here. Having an ethanol sensor is good too if you plan on using E. The fuel ceiling on the stock tune is not as high as the comp cars so it's a somewhat narrow window between enough E to avoid timing corrections while not maxing out fuel trims. E27ish seems best for me mixing with 93. I'm watching the clutch threads, PTB seems to be the choice, but enough issues all around I'm not sold on a goto clutch solution yet.

I don't have any ethanol around me so it would just be 93. I think that is map 3 on the jb4. glad to hear your not having any issues. I figured it should be okay the platform seems to be very strong. And yeah i have been looking into clutches i'm on the bench also .

[IusetobeJDM]

Originally Posted by gc.g80brg

I wouldn't get jb4 or race chip... best way to use prematurely the engine components.

I figure it would wear the engine more then stock but if i got 100k out of the car vs 150k i would be ok with that.

[AhsanU]

Originally Posted by IusetobeJDM

I'm just wondering if people have had any issues with this platform with basic bolt-on mods? I plan on just exhaust , jb4 , intakes and that's about it for a quick daily. I have a 6 speed manual so i plan on upgrading the clutch eventually also.


-thanks!

In general, the S58/G8X chassis has been relatively reliable so far if you're not really really pushing the envelope. Just keep up with your maintenance and enjoy it. I'm currently 23k miles in with no issues, and I'm fairly extensively modified on a 6MT. For the first 21k miles, I was on basic bolt-ons and for about 2k miles now, I've been on a big single turbo and all the things that typically go with a single turbo. There are no hiccups to really mention other than dialing and tuning the damned car, which has been a bit tedious and laborious at times, but worth it once it's fully dialed in.

Just please keep in mind that once you start modding, you should go into it with the mindset of "if I blow this engine up, I'm responsible and will have to buy another one out of pocket" as BMW will do just about anything to blame it on your mods if anything goes awry. That being said, if you keep it relatively simple with a piggyback, exhaust, HAS kit, etc. then you'll be safe as there are loads of people running basic mods with no problems. Again, just keep up with basic maintenance, and you'll be fine.

[mike@x-ph.com]

Originally Posted by IusetobeJDM

I'm just wondering if people have had any issues with this platform with basic bolt-on mods? I plan on just exhaust , jb4 , intakes and that's about it for a quick daily. I have a 6 speed manual so i plan on upgrading the clutch eventually also.


-thanks!

There are no issues, as proven by hundreds of thousands of users over the years.

Just make sure you get proven brands and run the recommended maps. Do not choose a too aggressive map for your mods and fuel, and you will be safe.

[Info@mad-us.com]

Intake, midpipe and jb4 are my go to simple mods for the g80. You can't go wrong!

I'd leave the factory clutch though it works fine, it's quiet and smooth.

[G MONEY]

Originally Posted by gc.g80brg

I wouldn't get jb4 or race chip... best way to use prematurely the engine components.

[Info@mad-us.com]

When using the jb4 with its failsale features its extremely safe on the engine components. I've been using them for years on multiple vehicles.

[gc.g80brg]

Originally Posted by Info@mad-us.com

When using the jb4 with its failsale features its extremely safe on the engine components. I've been using them for years on multiple vehicles.

Every high performance shop I know won't tune the car if it had a JB4 before. I know so many horror stories with jb4 also on different car brand (subaru, bmw...).

[Info@mad-us.com]

Originally Posted by gc.g80brg

Every high performance shop I know won't tune the car if it had a JB4 before. I know so many horror stories with jb4 also on different car brand (subaru, bmw...).

Interesting. Literally my first time hearing such a thing.

[GrannyShiftG80]

Originally Posted by Info@mad-us.com

When using the jb4 with its failsale features its extremely safe on the engine components. I've been using them for years on multiple vehicles.

Should I still log jb4 or can I just leave it map 2 pump 93

[G MONEY]

Originally Posted by gc.g80brg

Every high performance shop I know won't tune the car if it had a JB4 before. I know so many horror stories with jb4 also on different car brand (subaru, bmw...).

Hi. I’m Teddy Ruxpin. Do I have a story for you🤪🤪. I’m local to VAC performance and they have done 1000’s of BMW’s post Piggy back and post pretty much anything you can think of. . I’m not sure there is another BMW shop in the country that has worked on and raced BMW’s more than those dudes. So not really sure what you are talking about brother🤷🏼‍♂️

[Indo Rider]

Originally Posted by gc.g80brg

Every high performance shop I know won't tune the car if it had a JB4 before. I know so many horror stories with jb4 also on different car brand (subaru, bmw...).

I call BS. What high performance shops do you know? Where are all these horror stories?

I been running JB4s since they were JB3s, multiple platforms, over 100k miles at least, good UOA reports from Blackstone, never had engine issues.

[mike@x-ph.com]

This forum is the best source for BMW tuning with hundreds of thousands of JB4 users and 15 years of history.

If it was not safe, every section would be filled with these horror stories. Clearly, that's not the case.

[Indo Rider]

Originally Posted by GrannyShiftG80

Should I still log jb4 or can I just leave it map 2 pump 93

It's always a good idea take some logs and review, at least occasionally. That said, map 2 on good 93 fuel should be safe and consistent day in day out.

[GolfCoyote]

My only concern with the JB4 (or really any OTS tune including FEMTO unlock) is the boost/tq ramp up at low RPMs. The rods seem to be the weakest link on these motors and a lot of TQ down low is a quick way to stress that weak link.

Obviously a lot of that can be mitigated by not creating heavy load at low RPM but just food for thought.

[SwankPeRFection]

Stock rods are fine on this engine unless you go Stage 3 crazy. There’s been more popped pistons on B58 engines than bent rods on S58. Lol

[mike@x-ph.com]

Originally Posted by GolfCoyote

My only concern with the JB4 (or really any OTS tune including FEMTO unlock) is the boost/tq ramp up at low RPMs. The rods seem to be the weakest link on these motors and a lot of TQ down low is a quick way to stress that weak link.

Obviously a lot of that can be mitigated by not creating heavy load at low RPM but just food for thought.

I haven't heard of a single rod failure on this car with off-the-shelf maps.

If its not an issue with the thousands of other users, i would not be worried it willl happen to you.

[GolfCoyote]

Originally Posted by mike@x-ph.com

I haven't heard of a single rod failure on this car with off-the-shelf maps.

If its not an issue with the thousands of other users, i would not be worried it willl happen to you.

I’m not saying there have been failures, I’m just parroting what I’ve heard is the potential weak link if/when something in the engine gives up the ghost. And if someone is concerned about longevity it’s at least something to be aware of.

[Mapper]

Originally Posted by mike@x-ph.com

I haven't heard of a single rod failure on this car with off-the-shelf maps.

If its not an issue with the thousands of other users, i would not be worried it willl happen to you.

I havent heard of a rod failure ... at all... for any setup. The one 2021 facebook bs post doesnt count.