2nd Gen JCW Most liked posts in thread: Car exhaust poping through hard acceleration

Get rid of the accessport. Its going to kill your car. This is not a joke. There is a reason they dropped MINI support. They couldn't figure it out.

 

That's nonsense. They stopped making it for MINI because they couldn't crack the Engine Control Unit on the N18 engine so they could reprogram it through the OBDll port, like on the N14 engine Accessport.

That limited their possible market share, making it unprofitable to make and support.

I've had one for seven years with no problems. If anything the AP canned tunes are a little tame so as to err on the safe side.

 

Manic tune, accessport, crap OBX downpipe, all of these things could be your problem.

 

What codes pop up? If your HPFP is failing it'll throw a code. The main issue is that you've got a ticking time bomb for an engine and you're messing with it. #betteroffstock

 

Problem solved :beer

Maybe not enough fuel for the amount of air you're pushing.

 

Si, or not enough injector?

 

What injectors do you have now? Are you still stock?

 

Take them SU carbs apart & put in some bigger jets. Sounds lean to me. It's an old school answer, but it hits on what may be your problem. Also check that fuel filter.

 

Says a guy who can't work on SU carbs. :wink: I've had both I like the SU carbs, but Webers have more tune-ability.

 

On a classic Mini it would be Weber carb, not carbs.

 

An old acquaintance of mine ran a pair of split Webers on his racing Mini.

Back on topic: My car doesn't have carbs & runs like it does?

 

On an R53, the exhaust popping during hard acceleration is called 'a good day'!

 

Nope. On hard accel there shouldn't be any popping in an R53 either. If you let off the throttle that is a different story. If yours is popping when your foot is on the gas you need to have your tune checked.

 

Ah... didn't consider the before vs. after lift!