Speed Density dry nitrous question
Originally Posted by Patrick G
You're missing something. The PE multiplier is based off both TSP and load (MAP reading). The PE multiplier comes in around 85-90KPa and often will come in at throttle positions as low as 30% (think low rpm passing in 5th or 6th gear).
Great news is you can adjust the parameters for either. In my case, I kept PE from coming on until the TPS exceeded 95% and to compensate, I pumped up the VE tables by 1.13 in the 90-105KPa range. As long as I keep my TPS at 95% or lower, my car drives 100% like stock.
With a 90mm TB, you can get nearly all your power with 95% TPS or less.
Great news is you can adjust the parameters for either. In my case, I kept PE from coming on until the TPS exceeded 95% and to compensate, I pumped up the VE tables by 1.13 in the 90-105KPa range. As long as I keep my TPS at 95% or lower, my car drives 100% like stock.
With a 90mm TB, you can get nearly all your power with 95% TPS or less.Robert
Edit: I see now, found the MAP kpa setting and the MAP Hyst setting and see how your doing it, very cool. We learn something everyday.
Last edited by Robert56@NitrousDirect; Oct 30, 2006 at 06:41 PM.
Patrick, how do you compensate for the fueling differences at say 3000 rpm vs 6000 rpm? You are getting twice the nitrous in the cylinder at 3k than at 6k, how does the SD tune account for this?
In theory, you'd think that in order to achive a nice level AFR, the nitrous flow would have to be proportional to RPM. Dry MAF setups can calculate load because it sees the nitrous, and wet kits add constant fueling with nitrous, so i'm trying to understand how it works with this method.
(sorry I know there are two dry sd threads going)
In theory, you'd think that in order to achive a nice level AFR, the nitrous flow would have to be proportional to RPM. Dry MAF setups can calculate load because it sees the nitrous, and wet kits add constant fueling with nitrous, so i'm trying to understand how it works with this method.
(sorry I know there are two dry sd threads going)
Thread Starter
Joined: Nov 2001
Posts: 8,246
Likes: 34
From: Victoria, TX
Originally Posted by QUASAR
Patrick, how do you compensate for the fueling differences at say 3000 rpm vs 6000 rpm? You are getting twice the nitrous in the cylinder at 3k than at 6k, how does the SD tune account for this?
In theory, you'd think that in order to achive a nice level AFR, the nitrous flow would have to be proportional to RPM. Dry MAF setups can calculate load because it sees the nitrous, and wet kits add constant fueling with nitrous, so i'm trying to understand how it works with this method.
(sorry I know there are two dry sd threads going)
In theory, you'd think that in order to achive a nice level AFR, the nitrous flow would have to be proportional to RPM. Dry MAF setups can calculate load because it sees the nitrous, and wet kits add constant fueling with nitrous, so i'm trying to understand how it works with this method.
(sorry I know there are two dry sd threads going)
__________________
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.
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.
Use the EFI Live COS5 it has its own nitrous tuner, By adding a pin to your ecm (pin 56 ) its activated by grounding it.Im runnimg the cos5 and it the best tune yet ,very easy to control. Im running in semi-OL Look at this for the dry nitrous tunning
Staging Lane
Joined: Dec 2004
Posts: 67
Likes: 0
From: nolensville tn
is anyone else tuning their sd dry shots like patrick is. i would think this would work really good for my nova. the car is rarely driven on the street. i have been tuning the ve fueling myself with efi live, its pretty easy when my car is mostly used a wot. i was going to buy the hsw interface but now i am tuning in olsd and looking for a good way to spray a dry shot. the custom operating system #5 sounds good also but i cant figure out how to upgrade my op system. the tuturial just confused me,the method patrick explained here makes sense to me.
i just havnt seen anybody doing this. let me know what you think.
i just havnt seen anybody doing this. let me know what you think.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
