PE vs IAT
Thread Starter
Staging Lane
Joined: Mar 2005
Posts: 85
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PE vs IAT I was wanting to use a PE vs. IAT so i can tune when I spray dry nos thru the meter. When I pull up HPtuners editor I can find the tab for PE vs. UAT but it will not let me "select" that option. Am I doing something wrong or do I need a different version? HPtuners, 99 C5, v.1.6.
The IAT is too slow to respond to a dry shot to be valuable in tuning IMO. If you're wanting to reduce timing on the spray, you can do that by going into your main spark tables and lop off all the timing you'd like in the load areas where nitrous hits. You won't normally hit those cells naturally aspirated so why not pull timing out when running a dry shot?
What are you trying to accomplish?
What are you trying to accomplish?
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Thread Starter
Staging Lane
Joined: Mar 2005
Posts: 85
Likes: 0
I want to tune for NA first. Then I would like to tweak my AF when I am using spray without changing my NA tune. I was wanting to aviod having to mess with the MAF frequency vs. MAF air flow. If there is a way to modify my PE verses IAT that would be great. I have the box but for some reason HP won't let me pull it up.
If you're spraying a dry shot, the MAF will calculate the load based on what it reads from the nitrous and it will give you the proper A/F ratio. Like I said, you want instant PCM changes when running nitrous and the IAT does not move fast enough to be useful in modifying anything quickly for nitrous. I'd concentrate on what the MAF can do for you (MAF freq) and timing tables.
Thread Starter
Staging Lane
Joined: Mar 2005
Posts: 85
Likes: 0
I will have to work on MAF frequency then. I know I don't want the same AFR N/A and NOS. I would want to run a little richer when I am spraying. Not a problem as I will log my frequency both on and off the spray so I can adjust the MAF table just in the higher range to richen it up a little while I'm spraying.
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Originally Posted by Patrick G
The IAT is too slow to respond to a dry shot to be valuable in tuning IMO. If you're wanting to reduce timing on the spray, you can do that by going into your main spark tables and lop off all the timing you'd like in the load areas where nitrous hits. You won't normally hit those cells naturally aspirated so why not pull timing out when running a dry shot?
What are you trying to accomplish?
What are you trying to accomplish?
