Timing Corrections cause.

[Vtecnet]

135i N54 17T 100ron Pump Gas + 1000ml WMI 80/20 mix

Timing Corrections especially up top.

www.spoolstreet.com

My cars timing is clean til near 5000rpm, then it gets a bit messy.
My car has B58 Coils and B58 plugs gapped to 0.022

My tuner thinks my injector bore is bad, or injector seals, however the car has new index 12's and seals.
Anyone running B58 coils here with decent boost? what are you using for plug gap.

 

[ShocknAwe]

Did you have clean timing before the B58 ignition swap?

 

[pbondar]

135i N54 17T 100ron Pump Gas + 1000ml WMI 80/20 mix

Timing Corrections especially up top.

www.spoolstreet.com

My cars timing is clean til near 5000rpm, then it gets a bit messy.
My car has B58 Coils and B58 plugs gapped to 0.022

My tuner thinks my injector bore is bad, or injector seals, however the car has new index 12's and seals.
Anyone running B58 coils here with decent boost? what are you using for plug gap.

I’m running g a leak of 22 psi with Nexsys B58 at 22 thou..only corrections are mid range..1-2 degrees..thinking of going the opposite way..

 

[CalvinNismo]

Sorry to hear this Charles. Long shot, but you could try indexing the plugs, it’s free and may help if the spark plugs are the cause.

Spark Plug Indexing. What is your preferred method?

I've been doing a lot of researching. The point of indexing your plugs is to position the ground so that you can achieve the most efficient burn. The most accepted way is to position the opening towards your intake ports where the fuel is coming in. In the n54, wouldn't we want to position them...

www.spoolstreet.com

Technical - Spark plug indexing

Disclaimer: this thread not meant for debates on whether there are any hp gains from spark plug indexing When it comes to spark plug indexing I've heard 2 different "correct" ways to do it. Gap facing intake, and gap facing exhaust. Traditionally, domestic guys and NASCAR race teams have...

www.spoolstreet.com

The video on the Benz forum walks you though it pretty much step by step.

 

[Vtecnet]

Did you have clean timing before the B58 ignition swap?

Its never been really clean on the bigger power meth maps.
My 18psi and 20psi pump gas maps are perfectly clean.

Ie: https://datazap.me/u/charlesb/rev-17-135i-17t-map-1-map-2?log=0&data=22

 

[Vtecnet]

Sorry to hear this Charles. Long shot, but you could try indexing the plugs, it’s free and may help if the spark plugs are the cause.

Spark Plug Indexing. What is your preferred method?

I've been doing a lot of researching. The point of indexing your plugs is to position the ground so that you can achieve the most efficient burn. The most accepted way is to position the opening towards your intake ports where the fuel is coming in. In the n54, wouldn't we want to position them...

www.spoolstreet.com

Technical - Spark plug indexing

Disclaimer: this thread not meant for debates on whether there are any hp gains from spark plug indexing When it comes to spark plug indexing I've heard 2 different "correct" ways to do it. Gap facing intake, and gap facing exhaust. Traditionally, domestic guys and NASCAR race teams have...

www.spoolstreet.com

The video on the Benz forum walks you though it pretty much step by step.

Thanks i'll look into it.