Tow tune and turbo brake

[Gooch]

What kind of things would a person want in a tow tune? Also how would one go about putting a Turbo Brake into it aswell? I've done Ramjet's tuning walk through, but dunno if it would be good for towing.

[ajamesbond007]

For the turbo brake, what kind of engine do you have?

[ajamesbond007]

bump

[Gooch]

2006 Lbz

[ajamesbond007]

I can answer the turbo brake definitively. As for what all goes into a tow tune, that's debatable lol

The turbo brake function is very simple to apply and works great. First we need to look at your turbo vane tables. At no throttle (0-5mm3), we want the turbo brake to "come on" to do so, we need to set the vane percentage to 95%. So start at 3000 rims and set thhose cells to 95, and then work your way down to when you want the turbo to disengage. My advice would be to drive around in tow/haul mode, see where your truck shifts and set it for those rpm ranges. Any lower rpm than cruising speed will result in loss of fuel economy because as soon as you left off the pedal, it engages and slows the truck. I usually set mine around 1600-1800 rpms as my lowest rpm setting. If you want a dedicated tow tune, set it as low as 1000-1200.

Once you figure out your rpm limits, you need to look at your max vane percentage table next. Change only the cells your want your turbo brake in, and set those cells to 95%. This will allow you to command 95% instead of 80 or whatever the factory percentages are.

I would caution anything over 95%. Any higher and you come to the point of dimenishing returns, as well as gives your turbo a little play.

For tow tune advice, I would ask first, do you have a pryo? If you do, you can experiment up to a 20% increase in pulsewidth. If you do not have a pryo, 10% increase in PW is max, and I would highly recommend you getting a pryo to monitor EGTs. Use the timing calculator as well to help increase your fuel efficiency. Also, if you add puslewidth, be ure to add the same percentage in boost. You are adding more fuel, better add more air.

Let me know how your progress goes. If there are any other questions, don't be afraid to ask!

[Gooch]

I can answer the turbo brake definitively. As for what all goes into a tow tune, that's debatable lol

The turbo brake function is very simple to apply and works great. First we need to look at your turbo vane tables. At no throttle (0-5mm3), we want the turbo brake to "come on" to do so, we need to set the vane percentage to 95%. So start at 3000 rims and set thhose cells to 95, and then work your way down to when you want the turbo to disengage. My advice would be to drive around in tow/haul mode, see where your truck shifts and set it for those rpm ranges. Any lower rpm than cruising speed will result in loss of fuel economy because as soon as you left off the pedal, it engages and slows the truck. I usually set mine around 1600-1800 rpms as my lowest rpm setting. If you want a dedicated tow tune, set it as low as 1000-1200.

Once you figure out your rpm limits, you need to look at your max vane percentage table next. Change only the cells your want your turbo brake in, and set those cells to 95%. This will allow you to command 95% instead of 80 or whatever the factory percentages are.

I would caution anything over 95%. Any higher and you come to the point of dimenishing returns, as well as gives your turbo a little play.

For tow tune advice, I would ask first, do you have a pryo? If you do, you can experiment up to a 20% increase in pulsewidth. If you do not have a pryo, 10% increase in PW is max, and I would highly recommend you getting a pryo to monitor EGTs. Use the timing calculator as well to help increase your fuel efficiency. Also, if you add puslewidth, be ure to add the same percentage in boost. You are adding more fuel, better add more air.

Let me know how your progress goes. If there are any other questions, don't be afraid to ask!

Thanks alot!

I currently do not have a Pyro, been looking at one, just no cash to spend on the truck lately.

Any recomendations on which pyro's to look at?

Also is there a non excel version the timing calculator, i don't have it and it's like $300 to purchase it.

[ajamesbond007]

You can use mecanicman's calculator on Google Documents. Don't purchase that timing calculator. Mecanicman's calculator is awesome, stick with it.

As for pryo's, I can't really lead you one way or the other. I purchased the Edge Insight, along with their pyro, and as far as I can tell, it works just fine. If you're looking for gauges, which I would highly recommend, grab an Insight. You can log multiple parameters (up to 8 at one time), such as trans temp, command fuel rate, boost, FRP, and many more. Holy recommend it over pillar gauges