Cold Weather Lope Tune

[majek5]

I read on another forum that lope tune+cold weather=BOOM! Is that true? Also, is the tune bad for the truck? I can't imagine that if it is Bill would have it as an option.

[cleatus12r]

I am going to let Bill handle this one when he gets on here. I'll alert him and let him know that this one requires his expetise.

I don't condone the use of tunes such as this so I will keep my mouth shut and fingers stay idle.

[majek5]

Could you PM me to let me know why?

[majek5]

Anyone else out there with the lope tune? Issues? No problems?

[majek5]

Really??? No one wants to chime in??? No one has the lope tune on an OBS???

[907DAVE]

Originally Posted by majek5

Really??? No one wants to chime in??? No one has the lope tune on an OBS???

I'll shoot.........I believe making a lope tune would consist of advancing the hell out of the timing @ idle to produce the white smoke and crappy idle. The problem I see with using the "lope" in cold weather would be that there are many maps designed to advance timing in cold weather to compensate for a mechanical delay due to thicker oil, and "slower" moving injectors. Combine these already advanced conditions with way more advance of the "lope" tune and the motor probably wont be too happy. Though I dont know if the "lope" tune has lessened SOI for cold weather to prevent any issues. Maybe someone else here has looked at this program and knows more about it............

[cleatus12r]

Originally Posted by 907dave

I'll shoot.........I believe making a lope tune would consist of advancing the hell out of the timing @ idle to produce the white smoke and crappy idle.

Anyway, some common ways to make a lope tune involve (but are not limited to):

Increased MFD @ idle. This causes a "war" of sorts between the commanded fuel rate and the base idle speed. The higher MFD will cause a high idle but the base idle speed wants to maintain a low idle (500-750) so there's more of an on-off type idle. In my experience (which isn't much because I don't care about a "ruh, ruh, ruh" idle) this makes for the "big cam" sound better than.......

Substantially increased ICP @ idle. This will usually cause a rough idle with an intermittent "hits and misses" type of idle. Again, this is my limited experience with rough idles talking.

White smoke comes from retarded SOI. This also makes the engine considerably more quiet (works really well for quieting down the 95-97 trucks that have single shot injectors).

[907DAVE]

Ouch.......so explain to me why are mechanically injected friends can have some serious lope ? Besides their Camshaft, is it because their injector pumps have a "fixed" advance and have way too much at low RPM's?












Or is their something else going on?

[cleatus12r]

Originally Posted by 907dave

Ouch.......so explain to me why are mechanically injected friends can have some serious lope ? Besides their Camshaft, is it because their injector pumps have a "fixed" advance and have way too much at low RPM's?
Or is their something else going on?

In all honesty, I don't know what the mechanical injection guys do.

I know how I've gotten a 7.3L Powerstroke to do it but I am still very new at this so don't take my word as gospel.


I've removed the rude and uncalled for link. I didn't mean anything personally by it.

[Power Hungry]

Most lope tunes are made using ICP tables and setting them at idle so that the ICP is excessively low at about 600 to 800 RPM which causes the idle to drop off. Then you aggressively ramp the ICP from 0 to 600 RPM which then slingshots the engine back up over 800 RPM.

It's not the worst thing you could do to your engine but I will say that I have seen a couple lope tunes with almost 15 MPa in the 0 to 600 RPM range which can't be very good. It like trying to go full throttle every second.

I personally do not care for either the Lope or Smoke tunes, but people want them so we may as well provide them. We just do what we can to make sure they're safe.

Take care.