This is my first diesel truck but I have modded turbo cars before and the process is surprisingly similar. Remove exhaust restrictions ad boost and fuel. What confuses me is the use of the phrase "custom tune" for a tune that is emailed to you. In the Subaru world we would call that a tweaked off the shelf tune. Where a custom tune has had the map custom built for your vehicle by running the car on a dyno and adjusting the fueling, boost, timing, cam avcs system ect. I have a Subaru STI that is modded pretty nicely and it has been truly custom tuned, on an all wheel drive dyno with a Tuner sitting in the passenger seat with his laptop monitoring the car as it is run on the dyno and adjusting variables between the runs. With a nice ratio between maximum power and reliability being the goal. I have read a bit on this forum and others but I haven't found this to be the common practice, does anybody do this?
If your curios about the STI it still has the stock engine and turbo. Mods are:
Walbro 255 LPH fuel pump
Deatschwerks 850 cc injectors
Perrin fuel rails
Perrin prototype Short ram intake
Perrin front mount intercooler--Subarus come with it mounted under the hood scoop
Perrin PWI-1 water injection kit spraying 50/50 H2O and methanol
Grimm Speed phenolic manifold spacers
Perrin equal length headers
Perrin catless 3" downpipe
HKS 3" catback exhaust
Car was tuned by Tim Bailey of Surgeline Tuning using a Cobb acessport version 2.0. I have maps for 92 octane, 92 octane + meth/water spray and an E85 tune. Why E85? It's 105 octane and very knock resistant. I made 380 torque at wheels on E85. Not bad for a little 2.5 liter four cylinder.
So who does true custom tunes and are they worth the money in the diesel world?
If your curios about the STI it still has the stock engine and turbo. Mods are:
Walbro 255 LPH fuel pump
Deatschwerks 850 cc injectors
Perrin fuel rails
Perrin prototype Short ram intake
Perrin front mount intercooler--Subarus come with it mounted under the hood scoop
Perrin PWI-1 water injection kit spraying 50/50 H2O and methanol
Grimm Speed phenolic manifold spacers
Perrin equal length headers
Perrin catless 3" downpipe
HKS 3" catback exhaust
Car was tuned by Tim Bailey of Surgeline Tuning using a Cobb acessport version 2.0. I have maps for 92 octane, 92 octane + meth/water spray and an E85 tune. Why E85? It's 105 octane and very knock resistant. I made 380 torque at wheels on E85. Not bad for a little 2.5 liter four cylinder.
So who does true custom tunes and are they worth the money in the diesel world?