Dynoed the "rare03srt10"

[rare03srt10]

Alright so i took the truck over to my roommates shop this weekend and we changed out the stock fuel pump to SRT10 spec because the truck wasnt running right so we figured with the srt10 pump running more PSI would help. Well the truck runs worse lol. We hooked it up to the dyno to check air/fuel and unfortunitly his wideband plug got smushed so we werent able to check air/fuel but decieded to take a pass anyway to see the graph and some numbers. Well at part throttle the truck doesnt wanna run at all. It you give the truck anything less then half throttle it falls on its face BAD, but at full throttle it clears out and feels good but still isnt making power. Truck made 369 horsepower and 395 torque. Heres a video of the pull:

[ame=http://www.youtube.com/watch?v=tlbLP-IxkNo&feature=youtube_gdata_player]‪Srt10 runnin waay to rich and lots of timing‬‏ - YouTube[/ame]

Do you guys think that the B&G tune is just way to rich or has waay to much timing? We still need to put it on the dyno to check air/fuel out but i can tell you that my plugs are looking pretty rich.


Oh and by the way i didnt print the graph but we took two pulls and the graph is VERY consistant and smooth

 

[JeffBoyette]

You really gotta get A/F ratio on a graph. At least in the cab. You have no idea what is going on with it. it could be pig rich, or pulling timing like a mother fucker. sounds like you got some issues with it falling on its face. Maybe a bad sensor or wiring. The motor is talking alot of shit on decel. i wouldnt give it hell on a dyno or the road again till i had a better understanding of whats going on with the fuel and timing. Could be dangerous.

 

[rare03srt10]

You really gotta get A/F ratio on a graph. At least in the cab. You have no idea what is going on with it. it could be pig rich, or pulling timing like a mother fucker. sounds like you got some issues with it falling on its face. Maybe a bad sensor or wiring. The motor is talking alot of shit on decel. i wouldnt give it hell on a dyno or the road again till i had a better understanding of whats going on with the fuel and timing. Could be dangerous.

yeah thats why we just took two pulls and accually did them in 2nd gear and let off a little early. Its pops and screams on decel so your right it could be dangorous. Thats why after those two pulls we just parked it untill we get the air/fuel hooked back up and get a better idea of whats going on.

Thinkin im gonna need to have my PCM flashed back to stock and maybe purchase a SCT tuner so we can play with it

 

[Troy's QC SRT]

Yea a SCT is the only way to go!

 

[ViperJeff]

Ditto...

The SCT would be a much better option as you can get tune upgrades via email. (not saying where to buy, thats your choice). The info can be emailed to a tuner and returned very quickly makying your dyno day a productive day.

Just my 2 cents, but this is an area where one shouldn't look for a work around

Vj

 

[VENOMOUS1 RACING]

I agree with the SCT as well, but also ran a B&G tuned PCM for awhile and loved it as well! Sure you can't switch tunes, or have them emailed, but they tune well and it did run like a raped ape.

I think you are fighting wiring or sensor issues as well as the fuel issue. You need 60 lbs at all times so hook a guage to it and see. If you have a factory tuned PCM, try it as well to ensure they both are good.

Again, I still wonder about the bad Cam Sensor or crank sensor, as I had similar issues with both and neither through a check engine light. I had flames 3 foot long coming outta my tailpipes, and I have side exit exhaust! Imagine how the cars next to me felt

 

[JeffBoyette]

Throttle position sensor, Intake air temp sensor?

 

[rare03srt10]

Ditto...

The SCT would be a much better option as you can get tune upgrades via email. (not saying where to buy, thats your choice). The info can be emailed to a tuner and returned very quickly makying your dyno day a productive day.

Just my 2 cents, but this is an area where one shouldn't look for a work around

Vj

Yea SCT seems to be what im gonnan need regardless what the issue ends up being

I agree with the SCT as well, but also ran a B&G tuned PCM for awhile and loved it as well! Sure you can't switch tunes, or have them emailed, but they tune well and it did run like a raped ape.

I think you are fighting wiring or sensor issues as well as the fuel issue. You need 60 lbs at all times so hook a guage to it and see. If you have a factory tuned PCM, try it as well to ensure they both are good.

Again, I still wonder about the bad Cam Sensor or crank sensor, as I had similar issues with both and neither through a check engine light. I had flames 3 foot long coming outta my tailpipes, and I have side exit exhaust! Imagine how the cars next to me felt

HMMMMMMMMM, Yea i put a brand new fuel pump in on friday night and it made the truck run more rough at idle and low end(went from a pump at 48psi to the srt10 at 60psi) but feels decent and 50% or more throttle.

My engine is 05 spec and i know the 06s had issues with crack sensor but my truck has same sythems your describing. My truck pops, and backfires like crazy and my wife drove behind me on the way home and said it throws HUGE flames out of both pipes also........you may be on to something here bud. How easy are both those sensors to change?

Throttle position sensor, Intake air temp sensor?

yeah its got a brand new IAT sensor from stealership ill pick up a TPS and try that too since its cheap

 

[WA 2 FST]

once you can get the A/F meter and other datalogging devices, do the pull in 4th. I know you know this, but 2nd gear pulls too quickly to get the best datalogging you can. And while it really doesn't matter for tuning purposes... a 4th gear pull will read significantly higher HP/TQ than a 2nd gear pull.

 

[LoveThisTruck]

once you can get the A/F meter and other datalogging devices, do the pull in 4th. I know you know this, but 2nd gear pulls too quickly to get the best datalogging you can. And while it really doesn't matter for tuning purposes... a 4th gear pull will read significantly higher HP/TQ than a 2nd gear pull.

He has the auto tranny... so shouldn't he turn the tow/haul off, and keep it in 3rd??

 

[rare03srt10]

once you can get the A/F meter and other datalogging devices, do the pull in 4th. I know you know this, but 2nd gear pulls too quickly to get the best datalogging you can. And while it really doesn't matter for tuning purposes... a 4th gear pull will read significantly higher HP/TQ than a 2nd gear pull.

yeah i know we used 2nd because we didnt wanna break anything and the wideband wasnt up n running but im inpatient and wanted to see some type of number lol

He has the auto tranny... so shouldn't he turn the tow/haul off, and keep it in 3rd??

yeah i thought the same....3rd gear cause 4th gear gonna get you great datalogging but 150+ on the dyno is kinda scary lol. 2nd gear with my 3.92 rear end was already over 90mph lol

 

[Troy's QC SRT]

The SCT can change the shift point rims as well....that alone is worth it I swear on everything! Getting it shifting right will have it running like a raped ape! That is after you get it running right

 

[VENOMOUS1 RACING]

The Auto is indeed supposed to be dynoed in 3rd, the final drive or 1:1 ratio gear as in any auto with Tow/Haul off and TV linkage disconnected to prevent downshift on the dyno into 2nd under full throttle. All 6 speed manual are tested in 4th gear, the 1:1 final drive gear. 3 speed autos are done in 3rd.
Still need to visually check your fuel pressure Bud.

 

[rare03srt10]

The Auto is indeed supposed to be dynoed in 3rd, the final drive or 1:1 ratio gear as in any auto with Tow/Haul off and TV linkage disconnected to prevent downshift on the dyno into 2nd under full throttle. All 6 speed manual are tested in 4th gear, the 1:1 final drive gear. 3 speed autos are done in 3rd.
Still need to visually check your fuel pressure Bud.

oh wow i didnt know we were suppose to disconnect the TV linkage. I was told if you disconnect that you wont get proper line pressure. And yeah next time we dyno there will be a wideband and a Fuel pressure gauge hooked up. Trying to get my PCM put back to stock but doesnt look thats gonna be able to be done so i may need to look for a someone selling a OEM virgin PCM

 

[rare03srt10]

Just ordered my SCT handheld tuner. Any ideas how i can get my PCM flashed back to stock? Friend at stealership said since the engine and PCM are 05 srt10 but the truck is a normal ram 1500 that they wouldnt be able to flash it back to stock. Something about the part numbers in the system when they plug my truck in or something. He said he would try to trick the system and do it but he is pretty sure it wont work and i could end up with a PCM that doesnt work at all......

 

[VENOMOUS1 RACING]

Just ordered my SCT handheld tuner. Any ideas how i can get my PCM flashed back to stock? Friend at stealership said since the engine and PCM are 05 srt10 but the truck is a normal ram 1500 that they wouldnt be able to flash it back to stock. Something about the part numbers in the system when they plug my truck in or something. He said he would try to trick the system and do it but he is pretty sure it wont work and i could end up with a PCM that doesnt work at all......

There's no reason he can't do it? You had to have the Vin # flashed to that PCM for it to work right? He should just be able to use that vin# and reflash the stock tune or latest update for sure.

 

[rare03srt10]

There's no reason he can't do it? You had to have the Vin # flashed to that PCM for it to work right? He should just be able to use that vin# and reflash the stock tune or latest update for sure.

yeah this is my buddys friend so he was pretty straight up with me and i asked him the same thing. I figure the VIN# to that PCM would be stored in there but he keep saying the vin for the truck wont match and stuff. Basiclly after speaking with him for a bit he said to bring the whole truck by and he would look at it for me and see what he can do. Is there anyway for someone to just send me a stock program that i could just load into my SCT. I only need to load it to test the truck for driveability and then i will have the truck tuned from there

 

[viperhauler]

where'd you get the sct from?

 

[rare03srt10]

where'd you get the sct from?

EBAY, soooooo cheap on there.

SCT XCALIBRATOR 2 DODGE/CHRYSLER FLASH PROGRAMMER | eBay

 

[VENOMOUS1 RACING]

OK, so if your truck has the PCM and steering column out of the same SRT10, then your Dodge guy should have no problem with it. Your Vin# is only good to he body now. As in DPS records and whatnot. As far as any tuning it would likely use the vin# of the donor vehicle to decode as an SRT10. If you are running the factory 5.9 steering column that DOES NOT communicate anti theft with the PCM then it would've have to have been turned off or the chip (key) pasted close to the module at all times? Sooooooooo..................................what did ya do?:dontknow: