Mike T! Thanks!!!
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Senior Member
Joined: Mar 2001
Posts: 113
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From: Ogden, Iowa, USA
Mike T! Thanks!!!
Mike,
I got my chip back last Friday!!! Thanks for the quick turnaround!
I put the chip in on Sat., but have not had a chance to really drive it and do any type of data logging. I will try to do some of that this week. We had rain here this weekend, so roads were too wet to do any runs. I did notice that the surging problem is gone!!! Yipee!!! Good job!!!
As soon as I get a chance, I will get a data log done and I hope to run a dyno on it too. I will stay in touch.
Thanks,
Steve
I got my chip back last Friday!!! Thanks for the quick turnaround!
I put the chip in on Sat., but have not had a chance to really drive it and do any type of data logging. I will try to do some of that this week. We had rain here this weekend, so roads were too wet to do any runs. I did notice that the surging problem is gone!!! Yipee!!! Good job!!!
As soon as I get a chance, I will get a data log done and I hope to run a dyno on it too. I will stay in touch.
Thanks,
Steve
Former Sponsor
Joined: Mar 1998
Posts: 13,385
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From: Virginia
Hi Steve,
OK, glad to hear the surge is gone - I knew it should be with those changes, that was just a "leftover" from the swap from a 4.6 to a 5.4 motor, basically. I tweaked the displacement a bit to get the load where I wanted it based on your last round of datalogging, and then I also went ahead and tweaked the transfer function and (just to be sure) re-did one part of the EGR flow at sea level a bit - so it should actually be running very nicely now, and be ready to tow or do whatever you want to.
What I would suggest now is, once you datalog it again let me review that data *before* you actually put it on the dyno again, as I may want to make one last round of changes based on that data - I'd like to see the info before you go back to the dyno for the final time, as believe it or not, though it may not feel like it, I have actually been conservative with it so far just to make sure the motor was running right after the swap. We should be there now - the datalogging you do next will tell me if I'm happy with what it's doing now for certain - once I'm satisfied, I'd actually like to lay on some more power for you with one last change, as there is still more to be had there on pump premium - another 10-15 HP or so, and another 20+ lbs./ft. of torque should be available, no problem. This is up to you of course, but I would like to get you all the power reasonably possible & safe on pump premium (it's what we do
).
Good luck & talk to you soon!
OK, glad to hear the surge is gone - I knew it should be with those changes, that was just a "leftover" from the swap from a 4.6 to a 5.4 motor, basically. I tweaked the displacement a bit to get the load where I wanted it based on your last round of datalogging, and then I also went ahead and tweaked the transfer function and (just to be sure) re-did one part of the EGR flow at sea level a bit - so it should actually be running very nicely now, and be ready to tow or do whatever you want to.
What I would suggest now is, once you datalog it again let me review that data *before* you actually put it on the dyno again, as I may want to make one last round of changes based on that data - I'd like to see the info before you go back to the dyno for the final time, as believe it or not, though it may not feel like it, I have actually been conservative with it so far just to make sure the motor was running right after the swap. We should be there now - the datalogging you do next will tell me if I'm happy with what it's doing now for certain - once I'm satisfied, I'd actually like to lay on some more power for you with one last change, as there is still more to be had there on pump premium - another 10-15 HP or so, and another 20+ lbs./ft. of torque should be available, no problem. This is up to you of course, but I would like to get you all the power reasonably possible & safe on pump premium (it's what we do
).Good luck & talk to you soon!
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Senior Member
Joined: Mar 2001
Posts: 113
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From: Ogden, Iowa, USA
Hi Mike!
I will be gone for the next week, but will work on doing some data logging when I get back and the weather is better.
I agree it seems to be running on the rich side now. When it shifts from 1st to 2nd, and then from 2nd to 3rd there seems to be some lag. Doesn't pull as strong as it did on the previous program. It also does not have the top end it did.
I want to look at the data and correct the O2 sensor problem we had discussed, then get you some good data to look at. I will not do a dyno until you have had another chance to fine tune it.
Will talk to you when I return.
Thanks,
Steve
I will be gone for the next week, but will work on doing some data logging when I get back and the weather is better.
I agree it seems to be running on the rich side now. When it shifts from 1st to 2nd, and then from 2nd to 3rd there seems to be some lag. Doesn't pull as strong as it did on the previous program. It also does not have the top end it did.
I want to look at the data and correct the O2 sensor problem we had discussed, then get you some good data to look at. I will not do a dyno until you have had another chance to fine tune it.
Will talk to you when I return.
Thanks,
Steve
Former Sponsor
Joined: Mar 1998
Posts: 13,385
Likes: 4
From: Virginia
Hi Steve,
Yeah, that O2 issue should be taken care of, and then we can nail the fuel trims as I'd like to. Right now it should be just a tad rich at idle, with the PCM pulling it back out via the O2 corrections (which can be seen in the fuel trims), etc.
Power-wise, we haven't actually taken any power out of it, it's just that now it's actually not running a tad lean or a bit too much timing like it was with the other MAF transfer function - once we knew what MAF it actually had on it, then we got it actually running "right" - so I'm not surprised that it feels a bit "weaker" for lack of a better term, as with the transfer function off, it was delivering more than commanded timing & less than commanded fuel - which will make it "stronger" - but it's not "right." It wasn't lean enough to hurt anything of course, nor was it detonating, etc - it just wasn't quite right due to that transfer function, so now it's pulling from where it should in the load tables, etc.
So with good O2's & another round of datalogging, we can nail all of that & then I can dial the power up to where I'd like to see it.
It's actually ready to tow right now, but I would like to see fresh upstream O2's & the datalogging before dyno'ing it, just so we don't have to deal with something again *after* the next dyno that we always know should be dealt with now. So let's see what the next round of data looks like, then once I'm happy with it actually achieving commanded A/F's & timing (which it should be doing now barring the O2 issue), then we'll dial in some more power it & let it rip on the dyno!
Yeah, that O2 issue should be taken care of, and then we can nail the fuel trims as I'd like to. Right now it should be just a tad rich at idle, with the PCM pulling it back out via the O2 corrections (which can be seen in the fuel trims), etc.
Power-wise, we haven't actually taken any power out of it, it's just that now it's actually not running a tad lean or a bit too much timing like it was with the other MAF transfer function - once we knew what MAF it actually had on it, then we got it actually running "right" - so I'm not surprised that it feels a bit "weaker" for lack of a better term, as with the transfer function off, it was delivering more than commanded timing & less than commanded fuel - which will make it "stronger" - but it's not "right." It wasn't lean enough to hurt anything of course, nor was it detonating, etc - it just wasn't quite right due to that transfer function, so now it's pulling from where it should in the load tables, etc.
So with good O2's & another round of datalogging, we can nail all of that & then I can dial the power up to where I'd like to see it.
It's actually ready to tow right now, but I would like to see fresh upstream O2's & the datalogging before dyno'ing it, just so we don't have to deal with something again *after* the next dyno that we always know should be dealt with now. So let's see what the next round of data looks like, then once I'm happy with it actually achieving commanded A/F's & timing (which it should be doing now barring the O2 issue), then we'll dial in some more power it & let it rip on the dyno!