pianoprodigy

iTrader: (1)

Someone was telling me about a new feature on HPTuners that will allow one to spray dry nitrous AFTER the MAF and when the nitrous engages it sends a signal to the PCM to compensate for the nitrous by enriching with fuel (after tuning, of course).

I didn't see anything about it on HPTuners' site (I could be blind though).

Patrick G

iTrader: (14)

That's cool. I know EFI Live has had that feature, but it's great to know HPT is offering it too. The way I understand it, upon triggering the nitrous solenoid, the PCM increases injector pulse width based on the size dry shot you're running. Just the ticket for the speed density crowd (like me)

Hennytime

iTrader: (33)

o wow thats awesome, but i feel it kinda defeats the purpose of a dry kit, this way you need bigger injectors and pump instead of getting the wet kit and just a pump

xaon

iTrader: (12)

The purpose of a dry kit is to use the engine's existing fuel system to provide the fuel (and keep it out of the intake at the same time)

The nitrous fuel enrichment simply uses straight user-entered fuel values instead of relying on the MAF sensor and existing calibrations to add the proper amount of fuel.

98Z28CobraKiller

iTrader: (17)

Can anyone verify from HPTuners?

pianoprodigy

iTrader: (1)

This is what I was really looking for preferably with an explanation of how exactly it works (where the signal plugs in).

Black02SS

iTrader: (36)

I haven't heard of HPTuners offering this. I do know that the EFILive OS is very nice. When you trigger the Arming switch, it actually adjusts the VE table and offers spark reduction to compensate. Very cool feature.

Beer99C5

iTrader: (21)

I am running a dry system how does this dry enrichment feature work?

I got EFI Scan to play with (holding off on the Tuning software til I see I can read and understand the logs), the OS for the Nitrous specific Timing tables as Black described is interesting to say the least.

I am thinking you can run the Valet PCM wire to the hot side of the Nitrous relay (it needs a grounded to be active), when the nitrous relay activates it will ground the PCM "Valet" Mode and cause the Nitrous specific timing tables to be used...no toggle switch required

Seems for my two stage system I can use the Dry enrichement for small shot and keep NA timing, and when I bump up to the dry/wet combined the valet mode will adjust the timing for the bigger hit?

Black02SS

iTrader: (36)

I am going to take this to PM as to not over take the thread.

CAT3

iTrader: (9)

HPTuners does not have a "feature" like that. It can however, tune your car with IAT vs. Advance/AF Multiplier and other tables so that when the dry nitrous is seen by the IAT it alters the advance and fueling accordingly. There are other ways to achieve the same results, using a ECT TT etc. But as far as clicking on a tab and loading it etc, no there is no such feature. EFI is now using the basis of a TT to achieve their "nitrous tune." That is, the solenoid activation (or arming for those overly worried the electrons aren't fast enough) wire signals the PCM that there 'X' parameter met and reverts to the "nitrous tune" which is nothing more than fueling and advance vs. 'X'. Quite simple and been in use with nearly any, to include Edit and Diablo, tuning software.

LoWeLL216

iTrader: (1)

I have HP Tuners v 2.1.12 and there's no mention of a feature like this.

CAT3

iTrader: (9)

Oh yeah, as per my above post, you need to use a 01-02 OS. Simple solutions, re-write entire PCM to an 02, flash it, tune it and be happy. Same thing as EFI is doing, they just have the convenience of running a wire for a signal, and calling it "new". No offense Chad, but thats all its really doing. I messed with the same thing after reading about the IAT tricker and applied it with Diablo Predator, with the help of James runninwiththedevil back when Jose was writing his tunes, damn that seems like forever ago.

383LQ4SS

iTrader: (33)

Allen...my mistake. It is the new EFI live that has that feature. I knew I read it here somewhere. heres the link

https://ls1tech.com/forums/nitrous-oxide/534936-efilive-custom-nitrous-tuning.html

pianoprodigy

iTrader: (1)

This sounds pretty promising. Any input on this possibility?

Black02SS

iTrader: (36)

This is available now with EFILive. It adjusts the fueling by the PCM and what you want. You have full control over both fueling and timing with no need to trick the computer into thinking anything else.

Robert56

iTrader: (2)

HP Tuners does have something similar coming. It's in beta right now. A whole new system, which is more pricy, but can do a lot more. Two tunes in one is nothing new, and we have been doing it with HPT for a couple years concerning fueling and timing. EFI is now offering a different approach to meet the same end.
Robert