lacroupade
Well-known member
- Joined
- Jan 14, 2009
- Messages
- 9,208
Well, I finally bit the bullet and bought a refurb Tunit for my truck.
After a lot of research I decided that the Tunit was the most versatile and the company had the best pedigree/recommendations.
Took a couple of days to fit it, partly because it meant dismantling half the dash to get at the ECU - on aircon equipped trucks its bolted to a metal plate above and behind the lower cubby hole, but getting it fully out takes a while....but its not difficult, just a bit slow.
Then after wiring it I had to have a couple of conversations with the guys at Tunit; turned out the wiring diagram for the 134-pin ECU was incorrect but I have to say, they are some of the nicest, most helpful people I've dealt with in a very long time. Anyway, problem was quickly solved and I had it set up in about three minutes after finalising the wiring on the correct pins.
I suspect its probably a 2-hour job roughly if you have no problems.
I have to say the difference is well worth it for the power increase alone, but it looks as if there is a fairly noticeable mpg improvement as well, the needle is going down a lot slower than before, despite me really hammering it on the way home to Wales last night.
Its great to know you've got a few extra horses on tap when you need it, cruising is more relaxed and overtaking is now a breeze, instead of the white knuckle ride it used to be. Tunit claim approx 25bhp and I believe it....in fact I suspect its a wee bit more because it has probably maximised the benefit of the induction kit I already had fitted....after all the manufacturers fuelling criteria are probably fairly limited.
The ONLY down side is you have to watch out when exiting roundabouts in the rain, as I found to my cost last night when a bit of throttle (OK quite a bit) had me going sideways for a few moments!
And the beauty is that if I fit other stuff, e.g. bigger exhaust, I can retune it to take full advantage. Then I can remove it and transfer it to another truck or sell it on and get much of my money back...but on initial estimates of reduced fuel consumption, I reckon at the price I paid for a refurb unit (looked as good as new) I will get my money back after about 15,000 miles, so well happy! Nice one Tunit!:thumbs:thumbs:thumbs
After a lot of research I decided that the Tunit was the most versatile and the company had the best pedigree/recommendations.
Took a couple of days to fit it, partly because it meant dismantling half the dash to get at the ECU - on aircon equipped trucks its bolted to a metal plate above and behind the lower cubby hole, but getting it fully out takes a while....but its not difficult, just a bit slow.
Then after wiring it I had to have a couple of conversations with the guys at Tunit; turned out the wiring diagram for the 134-pin ECU was incorrect but I have to say, they are some of the nicest, most helpful people I've dealt with in a very long time. Anyway, problem was quickly solved and I had it set up in about three minutes after finalising the wiring on the correct pins.
I suspect its probably a 2-hour job roughly if you have no problems.
I have to say the difference is well worth it for the power increase alone, but it looks as if there is a fairly noticeable mpg improvement as well, the needle is going down a lot slower than before, despite me really hammering it on the way home to Wales last night.
Its great to know you've got a few extra horses on tap when you need it, cruising is more relaxed and overtaking is now a breeze, instead of the white knuckle ride it used to be. Tunit claim approx 25bhp and I believe it....in fact I suspect its a wee bit more because it has probably maximised the benefit of the induction kit I already had fitted....after all the manufacturers fuelling criteria are probably fairly limited.
The ONLY down side is you have to watch out when exiting roundabouts in the rain, as I found to my cost last night when a bit of throttle (OK quite a bit) had me going sideways for a few moments!
And the beauty is that if I fit other stuff, e.g. bigger exhaust, I can retune it to take full advantage. Then I can remove it and transfer it to another truck or sell it on and get much of my money back...but on initial estimates of reduced fuel consumption, I reckon at the price I paid for a refurb unit (looked as good as new) I will get my money back after about 15,000 miles, so well happy! Nice one Tunit!:thumbs:thumbs:thumbs
