Got Smoke?
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- Oct 8, 2006
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1998 Peterbilt 3406E, whats the best cost efficient way to turn them up?
Fuel temp resistor gives them an extra 50hp.
Honestly if the truck is a 550 just leave it alone...
Some of the new flashes Ect don't seam.to actually net anymore power on the dyno
PDI and forget it. Have 3 done and they will bury a PP box. 700hp to the tires and does NOT get hot. Another option is there is a modified 7CZ 600hp file around that had the timing bumped that runs really well. Can get that done cheaper than the PDI tune if you don't want as much power.
Is yours a 40pin ECM (5EK prefix) or a 70pin (2WS prefix)? Changing injector trim codes can add a little. The fuel temp mod adds a little also but only until the fuel actually gets hot.
Stay away from Cat all they will do is charge you to flash a low NoX file in your ECM and you will not be happy.
well that all depends on what cat dealer you go to and how well you know them. i know there are a lot of bad ones out there, but we can uprate, change fls/fts, and injector trim codes for free, depending on how well we like that customer. speaking of pdi, do you know if you hhave to send the ecm to them? i know we have put a couple pdi manifolds on for guys and im not real happy with how they fit, thats all i know about them. by the way jfaulkner, i love that pic haha
^^^you can change trim codes with a pro link as well.
The 6999 codes work good for me but some guys have said they don't like the way they idle. I believe 5232 are the alternate codes.
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Anyone with Cat ET can change trim codes and there are PLENTY of guys with factory cat flash files that can also change the fls/fts but if you really want to make them run you need modified flash files.
There are a couple of modified files that got leaked and have spread around, one will brick your ECM. That's why you have to know who your dealing with. The 7CZ file (70pin ecm) that's made it to a few people's hard drives was modified by Jared (owner of PDI) a LONG time ago and was leaked and runs really well. There is also a modded Acert file (120pin) I've heard about that get's the same reviews.
Bottom line the ONLY way to get big power without changing any hard parts (cam, injectors ect) is to have someone flash your ECM with a good file. By good I mean NOTHING you'll be able to get at a dealer, all their files are the latest EPA files that will totally castrate your truck. The other way is to swap the cam and bigger injectors.
As far as having your ECM flashed by PDI you don't have to sent your ECM off, you can just find your local dealer and they now have the ability to flash Cat/Cummins while you wait (Detroit is in the works).
i agree a modified flash file would be the best way to make good power but how much does it cost? cuz i believe that the original request was most cost efficient , which to me means whats the cheapest way. and as long as you have all the old flash files, which are not the latest epa flash files, im guessing that would be pretty cheap. just a guess cuz i dont know what pdi costs
haha yea i tried goin from 435 to 550 on an mbn once, ET wouldnt allow it
Was it just over $1200? That's what I've got them for before, and it's identical to the $2400 PDI charger but with no warranty. (if you paid me twice the price I would warranty it too :hehe On my 6NZ it builds around 40psi with a PDI stage 1 tune, only downfall was the larger exhaust housing kinda killed the jake performance and with dual external air cleaners it's f'ing loud so no driving with the windows down on a long pull.I had my 94 5EK flash from a 435 to a 600 5DS file and what a difference. I already had the 58's injectors in it. Im putting the stage 1 B/W turbo tomorrow. Bought the turbo unassemble in 3 pieces plus 2 clamps and cost almost 1/2 the price from these performance shops. Without the stage 1 turbo, it has been FUN to drive. No heating problems what so ever. EGT's never above 900. Just been watching the manifold pressure due to still running the stock turbo and dont want to overspeed it. Can't wait to see once I install the stage 1 what it will do.