New flash w/ poor performance

[DC-8 MX]

I bought a 2006 F-250 w/ 80,000 miles on it last year. The Oasis was clean as was the truck. Last week, I took the truck in to Ford for a trans flush and a cold start issue. Ford flushed the trans and, according to procedures, flashed the FICM. Everything is great however my performace is not near what it was before the flash. The shifts are much weaker and I dont have near the acceleration off the line. Turbo PSI is down as well. Could it be the previous owner had a tune which was erased?

[sportsman500]

this latest flash has reduced the perfomance for some reason , it only came out a couple of weeks ago .

[famousamos0901]

im glad i foudn this because i was going to take her in for a tranny flush considering i have no time but f that ill do it myself, sorry about the tune loss bud.

[75' forty]

yea, i just got that flash i highly recommend not to get it.

performance sucks.
mileage sucks. im getting 2-3 mpg less now.

truck does start better in cold tho, but looks like im going to be tuning it now to fix how underpowered the truck feels now.

[Mike Hickman]

Guys tell them do not touch it do not updated or flash it thats all you have to say , I did and still do when going in for oil changes . Also tape the port up block that sob off ....

[cajun1963]

Mine has the new flash too. Performance is flat as a board. I have a SCT but it's a pre-loaded model and they haven't worked out a new strategy for the new Ford update.

It didn't help my cold start. I need a new FICM and I hope that fixes some of my problems.

By the way, changing your oil from 15W 40 to 5W 40 does not help at all. Save your money.

[DC-8 MX]

Well today as I was driving down the road, my truck just quit running. Truck would crank w/ oil press. but not start. Ford now has the truck and they say "bad fuel press. regulator". Ford also said that the new flash would not change performance. I am thinking the truck had a tune and it was erased with the new flash. The differience is drastic, no more sidewase in 2nd gear.

[baja60]

do the dealers always put the latest flash on a new FICM? i just replaced mine this week and havent been able to drive it yet because of a bad glow plug module i am waiting for but wonder if i will have the same problem.

[75' forty]

Originally Posted by DC-8 MX

Ford also said that the new flash would not change performance. I am thinking the truck had a tune and it was erased with the new flash. The differience is drastic, no more sidewase in 2nd gear.

the service guy i got stuck with said my truck would run like a scalded dog.... it doesn't even chirp the tires any more.

[DC-8 MX]

HPOP is bad. Waiting for OK from Ford for the warantee repair.