Jeff@Spartan
New member
LOL
My MPD S475 Kit.
- Thread starter bigrpowr
- Start date
jdgleason
Active member
The cam should help spool up, should it not? The truck wont be a nitrous truck or a track queen. It will be daily driven with different chargers. No other changes than turbos. I dont understand why you're so hung up on this. We said hey we dyno'd an s475 kit. It made pretty good numbers. Here's a video. Watch it if you wish.
This was in wake of other trucks that made good power yesterday... Dustin's truck made 850 and mals made consistent 880-890 pulls. It was a good day for fords yesterday and you're making it sound like we maliciously bashed Mpd. It didn't happen.
In all honesty, no matter what size injectors you run, I personally don't see a single that large working at this altitude on a 6.4. a buddy of mine has a 71mm single on his built, blue printed, balanced cummins, and it doesn't drive well, plus towing is out of the picture.
Dustin tried a single and then a single with a procharger and reported that it didn't work well out here. The altitude is pretty unforgiving as far as making big power and retaining awesome spool up goes. Now, if your truck is a weekend toy then a single can be fun and make big power. I wouldn't wanna tow a horse trailer around with one, however.
No smoke and mirrors, no bs, but this setup (tadds truck in specific) didn't drive well out here. Those of us at altitude like vgt stuff for a reason, and it's not because we like spending extra money.
The can should have helped alot actually because on the dyno it wouldn't make any power below 3000 rpm once it lit it moved. The cam made power all the way to 4500 rpm where the fueling cut out. So if anything the cam should have helped a ton. ***er makes power as a single there is no doubt
idkillinit
New member
So its his daily driver and wasn't built for nitrous. So you thought it was a good idea to use 250s for daily diving. Hmm. Ok. But it was just stated above that it was intended for nitrous that's why it has 250s. Hmmm. You detuned it. No you switched to extreme street which only changes pulse width which is by no means the only way to control fuel. What about the spray rate. Or the fact that the pattern will get sloppy on huge injectors and won't combust properly.
Look if you built it for a daily then it was thought out wrong. If you built it for nitrous use then don't complain about driveablility. If you want to see how well craigs setup spools at elevation then use the same fuel set up he claims works so well and compare it.
Powerstroked162
On Da Juice
Do you live in Roswell? Holy ***. The truck didn't work at elevation. Its not a conspiracy theory. Its fact. Craig's works at sea level and works well as seen by yesterdays track times. This has been an ongoing topic of question for sometime and the results are finally in to lay this one to rest. Lay off, or strip your truck down, drive to Pueblo and report back. Jeez
idkillinit
New member
I'm done. It was a fair comparison with similar fuel and tuning. It just won't work.
jdgleason
Active member
Ok now you're really startin to shine as a dude who doesn't know his ass from his elbow. Do you know what the difference between 1.75 and 2.3 pulse width is? Cuz it's friggin huge. Let's forget all about the 475. Why don't you think 250s would work for daily driving? In your infinite knowledge and experience, please enlighten us.
Why don't we look at duramaxes for example. Duramaxes dd WAY bigger nozzles than that all the time. Have for years as a matter of fact. It's all about tuning and airflow, correct? Correct. So, who are you to say it was setup incorrectly? Since obviously you must know what the future plans for this truck are, do you care to share with us? Any idea what kinda cfm that truck will see?
<------- lets pretend this arrow is pointing to a box. You go ahead and keep thinking inside of that box and the rest of us will be over here ----->
BFT
Moderator
Give it up guys, he's on to your plots and skeems
idkillinit
New member
So everyone should just buy 250s and detune them then. Yup that's it might as well quit selling all the smaller ones because they are useless.
01PSD
New member
He said they're adding turbos..
Aj I think your over looking some things. The injectors in that truck are only a couple lpm larger than craigs.
And what do you mean about spray rate?
I also think that craigs xstreet has 2.2 pw and tadds truck had 2.0 if I remember right. So there should have plenty of fuel back. And the injection doesn't get sloppy if its maintaining 25k rail pressure
01PSD
New member
I don't see it lasting much longer LOL
Powerstroked162
On Da Juice
You live at 16ft above sea level.... Tadd is at 5300ft. Its fair to say what may work for you and others on the east coast isn't gonna work *as well* for others who daily drive trucks at elevations 5,284ft higher then where you are
Erikclaw
Active member
Personally I don't see how 250's are streetable unless it will be on something with triples.
BFT
Moderator
I swear I remember saying to keep it cool and I'm sure I didnt say it in Mexican.
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I would put 250s in my truck and I bet it would drive fine
Erikclaw
Active member
At a lower pw right?
Yea definatly
Erikclaw
Active member
Would the reasoning for running them at a low pw so you could spray for the track or the dyno by changing the tune?
No you make.more power by delivering a large amount of fuel in a shorter period of time as long as its the right amount of fuel
