N20 Tuning and grounding out the IAT question
01-09-2007, 05:46 PM
#21
Originally Posted by 12secSS
Oh, don't get me wrong, it works good. 
But I am comparing it to say when you go into PE Mode and how quickly the fuel enrichment is changed. That is what I would like to achieve. The fueling does come perfectly in line by 4000 rpms if the run was started at 2400 rpms using solely the PE vs. IAT. I just hate the initial lean spike. 
But I am comparing it to say when you go into PE Mode and how quickly the fuel enrichment is changed. That is what I would like to achieve. The fueling does come perfectly in line by 4000 rpms if the run was started at 2400 rpms using solely the PE vs. IAT. I just hate the initial lean spike. And thanks for the input, I found the table in my 01 tunes, I kinda wish they had it in the 98-00s....
01-10-2007, 09:57 AM
#23
Originally Posted by Frost
No, if the IAT is out and a fixed resistor is in when armed then there is no wait for the IAT to transition....
Originally Posted by Frost
And thanks for the input, I found the table in my 01 tunes, I kinda wish they had it in the 98-00s....
Luckily the 99-00 can be reflashed to 01-02, unfortunately not the 98s.
01-10-2007, 10:08 AM
#24
What benefit is there in keeping the IAT functional on the bottle?
How do I go about flashing an 01 binary onto a 99 or 00 PCM? To keep this simple, let's say that the 99/00 car is stock and so is the 01. Obviously the injectors are different... so I'm not talking about any table swaps needed, I'm good with that, just the how-to and any gotchas....
How do I go about flashing an 01 binary onto a 99 or 00 PCM? To keep this simple, let's say that the 99/00 car is stock and so is the 01. Obviously the injectors are different... so I'm not talking about any table swaps needed, I'm good with that, just the how-to and any gotchas....
01-10-2007, 10:15 AM
#25
Originally Posted by Frost
What benefit is there in keeping the IAT functional on the bottle?
Originally Posted by Frost
How do I go about flashing an 01 binary onto a 99 or 00 PCM? To keep this simple, let's say that the 99/00 car is stock and so is the 01. Obviously the injectors are different... so I'm not talking about any table swaps needed, I'm good with that, just the how-to and any gotchas....
Just select a file that is 01-02 and do a write entire, not a write calibration. It will take about 2 minutes and you are good to go.
Catch:
You will not be able to use your VIN, may be critical when smog or inspections (if applicable). Or just flash back to the OE file.
02-09-2007, 01:30 AM
#29
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Good info for sure, i was telling someone the other day there is a way to do this. I was going to use the same kinda setup on my GTP to lower timing instantly when the system was armed for nitrous.
When my TA was tuned i was told you could not instantly change timing through the ECM that the nitrous had to slowly cool off the IAT sensor and timing would be retarded. I did not like that so i found some info on a GP site about doing it with resitors but never got around yet to creating anything mainly for the lack of HPtuners.
I'm glad Frost brought this up so i can start making something for the TA and the GTP. And since i have HPtuners ordered i can change the tables needed also in both cars to get the timing perfect.
When my TA was tuned i was told you could not instantly change timing through the ECM that the nitrous had to slowly cool off the IAT sensor and timing would be retarded. I did not like that so i found some info on a GP site about doing it with resitors but never got around yet to creating anything mainly for the lack of HPtuners.
I'm glad Frost brought this up so i can start making something for the TA and the GTP. And since i have HPtuners ordered i can change the tables needed also in both cars to get the timing perfect.
Last edited by 89tang; 02-09-2007 at 02:21 AM.
02-16-2007, 07:55 PM
#32
So then using a maximizer 2 I could use the timing output to activat the relay to the resistor which would instanly show lower IAT temps and I could set my timing in that cell for the nitrous.
Could I also use the Maximizer's second timing output to activate a second relay with a different resistor that would activate a second cell for timing on the second stage? Would I just need another relay and a different voltage resistor?
Could I also use the Maximizer's second timing output to activate a second relay with a different resistor that would activate a second cell for timing on the second stage? Would I just need another relay and a different voltage resistor?
02-17-2007, 09:49 AM
#33
Originally Posted by greatwhitess
So then using a maximizer 2 I could use the timing output to activat the relay to the resistor which would instanly show lower IAT temps and I could set my timing in that cell for the nitrous.
Could I also use the Maximizer's second timing output to activate a second relay with a different resistor that would activate a second cell for timing on the second stage? Would I just need another relay and a different voltage resistor?
Could I also use the Maximizer's second timing output to activate a second relay with a different resistor that would activate a second cell for timing on the second stage? Would I just need another relay and a different voltage resistor?
I have had some issues with a project at work that have eaten all of my free time but this project of mine is about to come back into focus. I'm in the process of hunting for another F-body to "experiment" on right now.
04-09-2007, 02:28 PM
#36
Having trouble finding a supplier for the tiny relays that can be a long-term supplier without wanting an arm and a leg... I am almost ready to give up and go solid state for the switching. I found 2 suppliers for the relays I WANT, but they are both surplus dealers and the quantity they have now is all they will ever have. I need to figure something out with a quickness though.
08-09-2007, 02:20 PM
#37
Originally Posted by NicD
..... I had the guys at HPT track down another table for me in the 04 GTO cals that's a second multiplier based on ECT vs IAT so I could set it lower. The factory table that you can't see in the current production version of HPT only becomes active at 165 or something in that area. Below that the IAT timing retard just doesn't work. .....
is this the same scenario for Gen III F-bod and vettes? Tried to send you a PM but your box is full
FINALLY getting around to some production on these units.... Gonna build 100 in the first batch.
Last edited by Frost; 08-09-2007 at 02:27 PM.
08-09-2007, 02:31 PM
#38
Originally Posted by Frost
is this the same scenario for Gen III F-bod and vettes? Tried to send you a PM but your box is full
FINALLY getting around to some production on these units.... Gonna build 100 in the first batch.
FINALLY getting around to some production on these units.... Gonna build 100 in the first batch.
08-17-2007, 01:30 PM
#39
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Would the IAT vs MAP PE modifier be enough to add fuel for a dry shot (just 100 or so) in SD? Or would it only be used for tweaking the AFR on wet hits.
I would love to run the HPT custom SD OS with a dry shot.
I would love to run the HPT custom SD OS with a dry shot.
08-17-2007, 03:14 PM
#40
Originally Posted by dmart
Would the IAT vs MAP PE modifier be enough to add fuel for a dry shot (just 100 or so) in SD? Or would it only be used for tweaking the AFR on wet hits.
I would love to run the HPT custom SD OS with a dry shot.
I would love to run the HPT custom SD OS with a dry shot.