Lowdown89
New member
I'm gonna leave it just for you haha
250/200s sooner than later.....
- Thread starter Lowdown89
- Start date
I'm gonna leave it just for you haha
Power Hungry
Member
So I went back to the shop this evening to video the boost and EGTs to see what they were running. Got the truck good and toasty and start doing some runs. Here's what we came up with:
Boost:
30 PSI @ 2500 RPM
32 PSI @ 3000 RPM
35 PSI @ 3500 RPM
EGT
800º at 2500 RPM
950º at 3000 RPM
1250º at 3500 RPM
On top of that, because the ambient temperature tonight was 55º, we actually dynoed 566 HP & 1190 Ft./Lbs., and STILL dropping fuel pressure to 25 PSI.
Boost:
30 PSI @ 2500 RPM
32 PSI @ 3000 RPM
35 PSI @ 3500 RPM
EGT
800º at 2500 RPM
950º at 3000 RPM
1250º at 3500 RPM
On top of that, because the ambient temperature tonight was 55º, we actually dynoed 566 HP & 1190 Ft./Lbs., and STILL dropping fuel pressure to 25 PSI.
Lowdown89
New member
So I went back to the shop this evening to video the boost and EGTs to see what they were running. Got the truck good and toasty and start doing some runs. Here's what we came up with:
Boost:
30 PSI @ 2500 RPM
32 PSI @ 3000 RPM
35 PSI @ 3500 RPM
EGT
800º at 2500 RPM
950º at 3000 RPM
1250º at 3500 RPM
On top of that, because the ambient temperature tonight was 55º, we actually
dynoed 566 HP & 1190 Ft./Lbs., and STILL dropping fuel pressure to 25 PSI.
Is that all? Geez!
can't wait to see what its going to do with a decent fuel pump and all the other mods!
TheSmokinStroke2002
New member
Awesome numbers!!
Sent from my ADR6400L using Tapatalk 2
Sent from my ADR6400L using Tapatalk 2
Power Hungry
Member
Yeah, it's not great for the injectors... but we've only done a dozen runs like this so it's not hurting anything yet. 1000 miles of this and it would wipe the injectors out. Fuel pump is going in today and we'll get this issue resolved and move on to the more exciting stuff... testing the BMW to see if it works like they say it does.
Oh yeah... forgot the video. Sorry about the graininess. The GoPro does NOT like low light situations.
http://www.youtube.com/watch?v=iz0sSJ4n-mE
Oh yeah... forgot the video. Sorry about the graininess. The GoPro does NOT like low light situations.
http://www.youtube.com/watch?v=iz0sSJ4n-mE
Last edited:
Power Hungry
Member
Here are some screen shots of the tuning curves from the 540 HP program as produced through AnalyTune. Samples are taken at 190º EOT.
Injection Control Pressure
(click on image to enlarge)
Injection Pulsewidth
(click on image to enlarge)
Start of Injection Timing
(click on image to enlarge)
Keep in mind that these are "DESIRED" values. While SOI and PWM values are consistent between desired and actual, ICP values may vary depending on the capability of the HPOP. It is extremely important to look at the generated values from the datalogs to ensure that the "DESIRED" values and the "ACTUAL" values correlate.
Also keep in mind that this is done WITHOUT forcing a maximum SOI Limit like some other tuners do (usually around 35º BTC). This means that this vehicle will run just as well when cold as it does hot. Under normal circumstances, the ECM will advance timing considerably when cold. For example, at 50º F, the SOI Timing curve would look like this...
Start of Injection Timing @ 50º F
(click on image to enlarge)
This is the difference between the two files....
Start of Injection Timing @ 50º F vs. 190º F
(click on image to enlarge)
The SOI Timing difference is considerable, and clamping the SOI on vehicles that run in colder climates can translate into noticeable cold-start and cold running issues, excessive white smoke, and considerable loss of performance until the engine reaches normal operating temperature. These engines need advanced SOI Timing when cold to offset the low compression temps, cold air charge, cold fuel spray, and even the inherent injection delay cause by the increased viscosity of the cold oil. Obviously, the best approach is to let the PCM handle the SOI in the manner in which it was designed for the best drivability in all situations.
Enjoy!
Injection Control Pressure
(click on image to enlarge)
Injection Pulsewidth
(click on image to enlarge)
Start of Injection Timing
(click on image to enlarge)
Keep in mind that these are "DESIRED" values. While SOI and PWM values are consistent between desired and actual, ICP values may vary depending on the capability of the HPOP. It is extremely important to look at the generated values from the datalogs to ensure that the "DESIRED" values and the "ACTUAL" values correlate.
Also keep in mind that this is done WITHOUT forcing a maximum SOI Limit like some other tuners do (usually around 35º BTC). This means that this vehicle will run just as well when cold as it does hot. Under normal circumstances, the ECM will advance timing considerably when cold. For example, at 50º F, the SOI Timing curve would look like this...
Start of Injection Timing @ 50º F
(click on image to enlarge)
This is the difference between the two files....
Start of Injection Timing @ 50º F vs. 190º F
(click on image to enlarge)
The SOI Timing difference is considerable, and clamping the SOI on vehicles that run in colder climates can translate into noticeable cold-start and cold running issues, excessive white smoke, and considerable loss of performance until the engine reaches normal operating temperature. These engines need advanced SOI Timing when cold to offset the low compression temps, cold air charge, cold fuel spray, and even the inherent injection delay cause by the increased viscosity of the cold oil. Obviously, the best approach is to let the PCM handle the SOI in the manner in which it was designed for the best drivability in all situations.
Enjoy!
Groomzybanshee
New member
I kinda want a 38r now...
Good.stuff...i like mine with 175/80's but its.best paired with a small hybrid.
Power Hungry
Member
You'll like this. Cold startup of Jason's truck with the 250cc/200% Stage 3 Injectors. You'd never know they weren't stock.
http://www.youtube.com/watch?v=lLTMbDfSkT4
http://www.youtube.com/watch?v=lLTMbDfSkT4
Cat_rebel
New member
That's awesome Bill!
Lowdown89
New member
Man it just looks so plain lol I really gotta fix that! And I'm dig gin how nice it starts just like a stocker!
dietoremain
New member
Sounds smooth as butter.. bill you da man!
Dmstrucks02
New member
Nice stuff in here, clean and crisp starts
Power Hungry
Member
Yeah, my 7.3L doesn't even crack off like Jason's does. But then again, I have almost 240k on my engine so it may be a little tired. LOL
Lowdown89
New member
You still have a 7.3? :wtf: Lmao I kid I kid!
Power Hungry
Member
