superchips programmer

dodge dude94 said:

You do have the Deathflash as you have a 2001, it's inherent in the 00/01 trucks, so yeah, you'll see a decent increase. You're probably better off with one of the 87 tunes since I've heard of guys actually LOSING mileage with the Eco tune because these trucks weigh so much.

Click to expand...

LaurenMagnum360 said:

geez if i have the deathtune it's gonna fly in a few days lol. the truck stock pulls harder than my old 5.0 mustang from a stand still XD


sucks i have it i thought they only had it if you had the little sticker for the factory calibration.

Click to expand...

dodge dude94 said:

Pulls harder because the 360 has a load of torque at low RPMs unlike the 5.0 'Stangs. These trucks get winded in stock form when you take them above 3700rpm, power peak is gone and the intake has run out of air.

lol Yep. I don't have it and my truck is a dog though, so the way they handle depends on the truck.

Click to expand...

LaurenMagnum360 said:

my truck doesn't even do 4k once in second gear. once i get to that point, it backfires through the intake and god only knows what else. i'm so stumped on it. runs great, no codes, no misfiring, just if you floor it on the highway, it gets to 4k rpmsish around 65-75 mph and all hell breaks loose.

go easy on it, i can get it to 90-95 by easing up the throttle. i don't think it's the cat converter, as i have excellent flow coming from both of my tailpipes.

new TPS, new IAC, new cap, rotor, coil, plugs and wires, i'm stumped

Click to expand...

dodge dude94 said:

New O2 sensors or MAP? Both of those play equal parts in the A/F ratio and in the case of the O2s they are what makes your PCM switch to open loop fueling while WOT.

Click to expand...

LaurenMagnum360 said:

i HAVE a new map sensor somewhere, brand new delphi product.... but due to my moving, it has lost itself amongst the clutter.... i was planning on replacing that along with the 02 sensors.

i didn't know it switched to open loop at WOT

i'll have to data log it and see if it switches over.

Click to expand...

dodge dude94 said:

Whoops. Shoulda kept it in the truck.

Yep, switches over to open look at WOT and I think the A/F stock is like 13.7:1 or something like that. If that, might even be leaner. A lean mix might explain the backfiring through the intake.

Which, by the way, never let your right ear point toward the intake at any time if it backfires. I learned that the hard way on the 76. lol

Click to expand...

LaurenMagnum360 said:

i started thinking my plenum was leaking, so i just went out and tested by putting my thumbs over the pcv hole and the breather hold on the pass. side... engine built pressure which is a good sign.

heard if it pulled vacuum its a 100% plenum failure

Click to expand...

dodge dude94 said:

FWIW, mine was blown the hell out and it passed the PCV test, so it's not a 100% indicator. My suggestion for checking plenum is to Seafoam the hell out of it, give it a couple days after, then pull the throttle body and take an inspection mirror and flashlight and look around in corners for oil seepage.

Click to expand...

LaurenMagnum360 said:

i dont wanna seafoam it, because if for somereason my heads are cracked, and covered by 128k miles of carbon buildup, i dont' want the cracks becoming exposed XD

Click to expand...

Chief115 said:

What is death flash?

Click to expand...

BBartow said:

"The so called 'Death Flash' was something Dodge did many years ago as a flash to the stock PCM to retard timing to eliminate the potential pinging issues when the inevitable plenum problem would become known. This was a cheap fix/band-aid instead of fixing the actual problem which was the faulty plenum plate. It is bad to the extent that it robs you of power."

Click to expand...