I tried the adjustment today and can't believe it. I have made many of this type of tweak on many vehicles over the years that either did nothing or messed something up. This works! On my 01 I went from 8 lbs max to 10 lbs in 1st & 2nd and 10.5 or so in 3rd and 4th. It really made a seat of the pants difference. It took maybe 5 minutes to do. I still run vacuum when cruising, even at 90. If I lightly give it throtle the needle starts of the bottom smoothly.
I am not sure exactly how it works or if Ford uses this to limit boost to 8 lbs or what, but I can teell a seat of the pants difference. It made as much differece as the chip.
Can someone explain exactly what it does and what changing the adjustment (which by the way was in the middle stock) can caus that might be detrimental?
Can you tell me exactly how you increased the boost? Which way did you turn the actuator - clockwise or counter clockwise and how much? I've got an '01 and just ordered a Diablo computer chip through Ken and Danny from this web page - I'll let you know the results from my seat o pants meter.
You don't turn the actuator. You loosen the mouunting bracket. The left side on the bracket mount is slotted. If you look at the stock possition you need to note and mark it with a sharpie or something so you can easily go back to stock if needed. I moved it maybe 1/8" down from stock. The key is to get an improvement without causing it to booast at small throttle possitions. In my case I was lucky the 1st time. If you over adjust it just move it again/
Regarding the chip issue! I have a Diablo chip.
1: Received it, installed it.
Detonated in 2nd gear and up at full throttle and shifted way to harsh at partial throttle.
2: Sent it back FedEX
Shifted stock and still detonated in 3rd and 4th
3: Sent it back again
Shifted harsh again and did not detonate
4: Shifts harder than stock (still a bit to harsh in my opinion) unless you are at 1/16 throttle or less and seems to run OK. I am not sure by the seat of the pants if it makes as much difference as they say. The boost adjustment was more of an improvement in my opinion.
Concerning the Diablo chip, it sounds like either you weren't running premium OR the chip was not the correct code. Has your truck been reflashed at any time (dealers will sometimes reflash it when you have it in for service without telling you)? The Diablo should have made a huge difference. Like the diesels, the Lightning's engine responds incredibly well to chipping, on the order of 30 horse-power.
1: Yes I was running 93 octane and the chip was reflashed by Diablo and the chip was correct for the 2001. All 2001 have the same computer where the 99/00's could be different.
2: I have been in contact with many 2001 owners who have had similar chip experiences with the 2001 chips. It seems the 2001 use diferent mapping and they have not got it quite right yet. The shifting seems to be a real issue. It may be that Ford is doing a better job and the tweaking is not so easy to get an improvement as before.
3: Do not believe everything you read and hear. I have never heard of a chip company, or any aftermarket company. claim that they cannot give you an improvement.
Alright guys... I just got my 2001 and I do not understand what we are talking about. Is the actuator the part that is on the intake and has the cooper tube coming our of it? If so, the braket on mine is not sloted.
I need a little further description so I can play too.
I already have a chip and I am most interested in this accumulator idea.
I've had it two weeks, already 2,000 miles are on it. I've used the excuse to run to the store to pick something way too many times.
I noticed a slight hesitation in third gear around 3,200 RPM. This occurs under agressive acceleration and/or WOT. Moderate no problem. It just seams to hesitate and then move on. 1st and 2nd gear appear to be fine. Any ideas???
I live in the Dallas area and would appreciate any supportive input on this.