Post #13
Mab, why? What does cost mean in terms of quality of file? I do it for the love of doing it - because so many cars out there run crap maps written by tuners who don't know what they are doing, or buy in the maps and sell them at silly money.
Torque limiter depends on state of tune obviously. I run 74mm3 diesel peak on the stage 1 files, which tails off after about 2250rpm, otherwise they get smokey. Alongside this, I run a calculated amount of SOI advance to keep the EOI safe. This has been heavily, and extensively dyno tested when I was developing.
Fuel temp tables, both of them, have been modified to retain the stock failsafe to ensure the pump doesn't get overworked if the temperature is too high, but increased limiters where the fuel temp is optimum.
Drivers wish maps have been altered to give better pedal feel, but retain the stock feel to drive - without a sudden surge at the bottom of the pedal. ALL sites have been modified, bar the very lowest to retain a smooth idle, as often the ECU jumps out of the idle map and into the pedal map when peoples TPS's are old and dodgey.
I do not touch the duration maps, as per some of the "pro tuned" files I've seen. This is NOT the right way to modify, the injector nozzle size has not changed - so why would we adjust the duration maps? It just upsets the SOI and EOI.
I run slightly more rail pressure, ensuring decent atomisation and with raised PCP's we need more rail pressure to make sure we can overcome that. I do also sometimes, when needs must, re-linearise the rail pressure sensor for an 1800bar one, but only if people are running big turbo'd with lots of boost. Likewise, if people want to run big inlet piping, I re-linearise the MAF sensor, and allow them to run a bigger one, from another car.
Also, just so you know... The smoke map took me 6 months to get right to ensure the AFRs are always lean enough to not smoke, and rich enough to make good power. As we all know, much richer than 15:1 AFR on a diesel and it will all get a bit cloudy - but in practice this rule can be bent a little in certain places...
I can assure you the maps I write are some of the best out there. They are done properly, as the OEM would write them. I have spent a LONG time perfecting the HDi tunes on a variety of different cars.
JP
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306 GTi-6 Track Car - 200+ hp all N/A!
306 DTurbo Track beasty - 209.9hp - RIP