If you tune on a proper dyno with load control you can vary the load and tune all the cells you need to, so it doesnt matter if youre in 3rd gear or 4th gear or whatever gear, you can tune in 3rd and 4th gear, or all gears if you want, as long as you tune all the load cells properly it wont matter (this wasn't able to be done with the old inertia only dyno's). I do agree that it is good to test it on the road or track after a dyno tune just to verify everything though.
I also don't recommend using the SAFC, out of the two options i would definitely pick a reflash.

 

Thanx 4 all the info so far guys I'm def set on a dyno reflash. I'll be seeing Andrew @ Dyno4mance(just a short drive away) hopefully next month. They also use a kick-a$$ dyno from Austrailia i've heard Now i'm trying to decide between a MBC or EBC, i think the electronic would be easier to use & adjust faster but is either one more accurate?

 

Dyno4mance has a Dyno Dynamics, which is a superb dyno. You will get a good tune there.

An EBC is by no means easier to use and adjust - it's quite the opposte. An MBC is EXTREMELY simple - you just turn the knob up or down. An EBC is much more complicated and boost isn't change as easily as with an MBC. However, an EBC has more features and sits in the cockpit providing an electronic boost gauge and the ability to switch between preset boost levels, although that's not as useful as it sounds, since it requires octane changes, too.

Squatchy, in theory you are correct, but when's the last time you saw or heard of someone who was flash tuned like that on a dyno trying to find MBT at every rpm? It just doesn't happen.

 

It's actually an eddy-current retarder dyno (and a damn fine one at that)


true, not often, but not being able to tune live makes it a lot harder to do (plus not being able to see where you're at in load on the map), but still, its the only way to tune

 

I agree, but it just seems more appealing to have a controller w/a pre-set boost level when switching octane occasionally that way i know exactly what psi i'm set on instead of making a pull, stopping to pop the hood & adjust the MBC then get back in and make another pull etc.

 

What's the difference, though? You still have to change the BC the first time when determining the different boost levels. You have to do that with an MBC or EBC. If you use a Forge UNOS, it has clicks that let you know exactly how many turns you've gone. I know exactly how many clicks for each boost setting I use among my 4 separate custom tunes. I just go out and switch from one setting to the next. Takes a few more seconds than pushing a button, but that's irrelevant to me, because I have to get out and change octane, plus I have to whip out my laptop to load the new tune. Taking a few seconds to turn my MBC knob is no issue.

Food for thought.

 

Thanx for the insight, i'll look into the Forge Unos. Does it use a ceramic or metal ball inside? I've heard that many metal style MBC used in fairly hot or cold weather can sometimes cause the ball to expand or shrink causing boost creep/drop, and other styles like Hallman Pro RX use a ceramic ball which is better

 

You can also get in-cockpit controllers for hallman mbc's. But I would think if your switching btw different maps with different amounts of boost, I would think an ebc would be easier to use since you can see exactly how much boost your increasing/decreasing before you do a run.

 

Huh? How would an EBC do that? It's no different than with the Unos. You set it to your other boost setting just like on the EBC, but there's nothing to tell you how much boost you're increasing/decreasing before the run other than doing testing in advance.

 

I'm confused here, i thought that's part of what an EBC does, allow you to electronically control your boost and change to a specific psi via pre set boost settings by punching a few buttons, rather than adjusting a knob and sort of guessing on an MBC? I understand the testing part of an MBC to get the pre set boost levels set up, but afterwards it should just be a few buttons to change from one psi to another correct?