I will be testing a new Dry product real soon on my car. This product will make void all past tuning for Dry obsolete, at least in the begining on the LSx platform. A major nitrous company will be suppling this product. I can't give any more info at this time as I have been sworn to keep my trap shut, but will post more when I beta test. I predict that dry usage will increase 10 fold.
Robert

 

As far as I know, the IAT sensor is not used for fueling in the MAF cars. Its a critical item for speed-density, where it will increase fuel because it indicates a denser air charge, but not for MAF. There is some evidence that the IAT is used to alter the ignition timing, at least in the LT1 system, but that wouldn't affect the fuel.

 

my main interest in this thread was to find a way to run a dry shot on the LT1 without using the FP increase method. I'm thinking I can use a small relay to put a fixed resistance on the CTS on activation to make the pcm read -40 deg. That is the coldest temp in the "% fuel increase vs coolant temp @ WOT" table. Would I be correct in figuring that running a 100 shot on a motor that puts down 400hp w/ no adder needs 25% more fuel as the new setting in the table? I would prob start with a very small 50hp jet and monitor with the WB just to make sure it worked like theory.. to make even better use of the pcm I would also use the traction control spark retard to pull timing

 

No. The stoichiometry of nitrous is different than that of gasoline. You have to run a richer fuel mixture with nitrous. That means you can't just add 25% extra fuel when you spray a 100-shot on a 400HP engine.

 

The link(given in post #4) says to check forplumbing leaks in the nitrous and fuel lines. Can this be accomplished by using a nitrous pressure gague and a FPSS would protect against the consequences of possible fuel line leaks, right? I'd just rather spend the $100 than having to check solenoids and jets and hoses and whatever. Plus, I don't have a garage or a driveway.

 

A FPSS won't tell you you have fuel leaks or protect you against fuel system leaks, unless they are so bad that they lower the fuel pressure. With a beefy fuel pump, you could esailly have a significant amount of fuel escaping the system, and not see any significant fuel pressure loss while the engine is operating.

 

just blew my motor with a dry 100 shot, lt-1 125k.i more put it out of its misery i guess.not quite sure what happened, but somthing is not quite right down there.making a god awful noise.i think it might be a broken crank??if so i guess the wet shot might have done the same thing.cold plug,no noticable knock before letting go.

 

Here's the product I have been talking about.
New Dry Kit
Robert

 

Haven't been here in a while and thought I would up date a little on what we have been doing with the dry hit. Currently my stage 1 is a "Direct Port Dry" using the stock PCM/ECM. Man it's absolutely the best street/strip nitrous method out there for the LSx/EFI platform, IMO. No longer are we required to run an after controller for fueling or timing pull, it's all done in the stock computer, concerning DP Dry. Also, we now have 80lb injectors that can run off the stock PCM/ECM, no more after market controllers/driver boxes and that was a limit before on going big. here's a little picture of the set-up. If anyone would like to hear more i would be happy to share what/when/why/how. As little as a year ago, running a dry DP set-up on the street was unheard of, but the technology keeps on evolving. It's a great time to be in the nitrous game, whether you run wet or dry kits.

Robert