Yes, that would be tuning, although a bad knock sensor could be pulling it back (this would throw a code, though)...I think excessive IATs could as well, but I can't imagine your IATs could be sky-high.

I wouldn't go full-throttle on the road until you get it resolved. When you are on the dyno, I think this will all work itself out. Are you just putting it on a dyno to log data, or do they have the equipment to alter your tune as well?

 

they should have all the equipment to alter the tune they are a authorized super chips dealer, so i would assume so, i geuse i will find out tommarrow, on the question about the intercooler routing, is this how yours is set up(asuming of course you have the same type of blower setup as me)

 

Sorry bro, I've got a Procharger.

 

I mentioned that earlier - Lightnings don't have knock sensors since they cause false knock detection & pull timing. So, I'm assuming any lightning blower swap into a non-lightning application would have those inputs disabled in the tune. Is this correct?

 

i think the lightnings have knock sensors, i used a lightning engine wireing harness for the install, and it had the inputs for the sensor, so i am assuming that is not the problem, and as long as it isnt knocking that shouldnt cause a problem any way(hopefully)

 

Sometimes the knock sensors will interpret other noises (blower rattles, etc) as knocking, and pull timing. This was the case with my noisy Procharger, so we disabled the sensors....freed up a lot of power but I need to be mindful of detotantion.

 

BT - I don't think so. They'd get fooled by all the 'noise' created by the blower mechanicals ( the sensors are acoustic transducers). So L's don't have 'em. So they would be telling the PCM to pull timing even during normal operation. That's also the reason that any sort of detonation in an L is real bad news, since there is no 'safety net'. ..

 

i hope this is not the problem as i would have to take alot apart to be able to get to that connector, i just think it is weird that a lightning wireing harness would have the inputs for a knock sensor if it doesnt need it, this would have been good to know before i started the install, if this is the problem i am hopeing it shows up on the datalogging process, i dont care if i have to tear the whole engine down i just want to be able to know for sure what the problem is.

 

BT - I edited my last post. Sal should be able to turn them off in the tune, if that is indeed your problem - not sayin' it is, just tossing out ideas, bud.

Good luck

 

I think the dyno time will be well-spent.

If it is a knock-sensor issue, they can be turned-off via the tune.

So long as your install went right, you should be OK.

Trust me, I feel your pain. I had a bad tune for a month in my daily driver, getting 6MPG, billowing black smoke and toasting my cats in the process.

But once it gets sorted out, you'll have a huge grin on your face every time you drive your truck. And you'll forget the PITA that you went thru to get there.

 

my truck had a COP going out that made the truck have a funny exhaust note once it started to see any boost. It would run fine up to about 3000RPM or when boost started building. It was my #5 COP that caused the problem and it did not throw any codes at all.

When you say it changes the exhaust note about what RPM's are you at? does it happen when you are reading boost on the gauge?

 

I believe L's have relocated knock sensor on side of block vice in valley, which would be directly under blower. SAL turns it off when you get his tune for 150's which L/HD blowers.

 

If the do have them (and I still do not think true L's do - see MT's & these two posts for the Lighnin' forum), relocating them would make no difference; the block is a great conductor for sound. Put 'em anywhere on that block & they're gonna 'hear' all the racket .

BT - when's your session hapening?

cheers
bubba

 

The Ford supercharged engines have the knock sensor in place and connected, however they are not programmed in the PCM.

On a stock engine such as yours, the sensor is connected and functioning. Some tuners find it necessary to turn them off in the tune to prevent them from pulling timing due to the blower noise.

When you look at your IC reservoir with the engine running, can you see fluid movement (bubbles, etc). If not, your pump is not running and will cause a definite power loss though not as extreme as what you are describing.

Your dyno session should give the answers.

 

I ran on a dyno with heat soak and the knock sensor connected and running in the tune. The program backed out 16 degrees timing. Beleave me that takes the power out of the engine.
I have a dedicated 7 inch Derale fan now connected to to the heat exchanger to prevent any heat soak. The tuner refused to turn off the knock sensor so I hooked the knock sensor pig tail up to an old sensor I had laying around in the garage and isolated it in the engine compartment inside some foam. That made a world of difference in the way the truck runs. I haven't been back on the dyno but my seat of the pants impression is worth smiling about.