(14-12-2012, 05:36 PM)darrenjlobb Wrote: You can make any pump in the world fit...its just a rotating shaft, that needs a pulley attaching to it... even more so with CR given you dont even need to time it, its no different to me bolting a VE onto a VP44 pumped audi etc...infact for CR, you could just run a shorter cambelt and run the cr pump off the aux belt if you really felt the need / a second CR pump or whatever...
The whole set your goal and buy to suit thing i guess i just dont get, do people really "set a goal and aim for it" with diesel tuning? because even if the did, surely once they did it, they would just set a new goal...for me tuning is tuning, and its a never ending thing...so i always buy with future potential where possible, but i guess that differs.
Agree on the former, how about running two pumps, and splitting the rail in two?
A pump serving a pair of injectors only? Take both rail pressure sensor signals, combine, and then re-map to suit... might not be perfect if one pump is lazier than the other but hey ho... not sure about the relief valve, I guess since it's duty cycle based the signal can operate two valves appropriately. I *think* that would work straight off if you could get the mechanicals to work. Hmmm...
As per the second part, well when I decided to FMIC and tune my car not many people were really doing FMIC mapping and giving honest/reliable information.
FMIC's were fairly common, but what they could be remapped to and how was still all just a bit unknown. Pro tuners were charging £300-500 and tinkering with boost maps (haha), while others were fitting tuning boxes to boost rail pressure for a bit more IQ, at a cost of £300 on top of the remap which was also £300... and still they only made 150bhp!
So I set my goal. Tune a standard HDi to a reasonable limit, which I did, and I tuned the exhaust etc.
Then FMIC it and tune that to the reasonable limit, which I did and got a pretty good result.
The next steps for me were economically un-viable against just buying a faster car to start with. Fundamentals such as short gearing, lack of a differential, and need to buy a hybrid turbo for the next stage meant at least £1500 to get me to the next step and it would increasingly be money down the drain.
There are different mind sets. It's nice to think everyone is happy to just spend money they will never see again on a chance, see what happens as they go along...
But there are people out there who want to tune cars and know what they'll get for a certain spend. They don't want to find themselves £3k down on mods a few years later and suddenly realise they could have just run a better car to start with.
Lets be very realistic. In the five or six years I've been remapping these cars I think only about 10% of customers have had open-ended projects that didn't have a start/end (they may have re-set a new goal after the current one was achieved)... and of that 10% probably 5% never had a good outcome because of that lack of clarity of what they wanted to achieve.
Modding beyond a certain point (the usual stuff basically) is as much about planning as it is budget. Just spending money on exotic components does NOT guarantee a good final outcome
Yes if you are clued up like you are, then it's a bit easier, but you are in the very very small minority...
Dave