Originally Posted by Indepth

I know there's a way of tuning no lift shifts into our cars by either cutting fuel or spark at certain RPM when the clutch is engaged and this is how many tuners implement no lift shifts into their tunes.

It seems as though this device would cut timing while letting fuel continue. As I try to make the right choice on whether I want to tune it into my car or use this device I'm let with the question of which is better - cutting timing or fuel?

To me, cutting fuel would be the 'safer' method because when you cut timing you're not left letting the injector dump fuel into the cylinder for when timing is 're-engaged' after your shift and it's met with extra fuel.

Does anyone have any insight on this? Can you comment on how this devices performs no lift shifts for you? (I'm assuming this device cuts timing and lets the injectors do as they please in the short period of time the timing is cut.)

Originally Posted by FNBADAZ06

Tuners can use the Park/Neutral rev limiter trick..... https://www.hptuners.com/forum/showt...n-E38-computer

For me, I installed the LNC-2000 to cut spark and retard timing when I finally put the car on spray.

Plus, with the LNC-2000, you can adjust the spark interrupt with a small screw driver (supplied with unit) to adjust launch RPM on the fly without having to use a laptop to adjust the settings in the tune, which is much more convenient .

Originally Posted by Indepth

It is more convenient, however, my questions still remains - which is best? Cutting timing or fuel? I'm aware it can be done, how it is done, and where to do it in HPTuners.

My other question was HOW are you using the LNC-2000 to perform no lift shifts? From the instructions I'm reading it's a RPM limiting/'2-step' device only, not a no lift shift device? Unless I'm reading something wrong in the documentation on the device; which is entirely possible.

Originally Posted by FNBADAZ06

My local tuner doesn't care to perform this in the tune. As far as which is best, I don't have an opinion or scientific reason to use one over the other...maybe other here or on the HP Tuner forum can give some ideas.

My LNC-2000 (a single step unit as it only has one RPM setting) is tied to my clutch switch, so every time the clutch pedal is engaged it will cut spark at whatever RPM I have it set too. As I generally launch above 4500+ RPM, the unit doesn't affect normal operations. As soon as revs climb above 4500+ RPM and I engage the clutch, the LNC will interrupt spark The LNC-2000 is not a latching device, so as soon as the clutch pedal is released normal spark operation is returned, regardless of RPM.