Getting ready to wire up my set up, and I need to make some decisions. Initially, I was thinking 300 single stage with a progressive controler. I'm now leaning toward a two stage: 100 dry or wet/ 200 wet dp. Looking for arguments either way. I estimate I'll need to pick up close to a second. Thanks.

 

My set up last year was we left on the DP (26 pills) then hit it with 125 DRY as early as we could (30-40' out).

I prefer stages.

 

I would also go with stages. Little dry shot off the line somewhere between 100-150 depending on how well you are hooking. basically up the jets until you start losing traction and come back down a size or so. For an eight second car i would consider three stages. 1st 2 stages dry and second stage wet dp.

 

What do you run on motor? tuff (Michael) went 8.92 in his TA, not sure what shot was in his DP.

 

Stages are nice as long as you dont get carried away and over complicate everything.

Either using it all on one stage with the progressive will work fine or you can use two stages with the largest stage (directport) being progressed. The smaller shot would be used to bring you out of the hole. You can use the directport pilled for the larger shot and progress it according to how much and how fast you want to bring it in according to track conditions.

Are you using a after market computer or still using the stock PCM?

Dave

 

Kinda the wild card, as its just getting wrapped up. I'll have to weight the car next week. Typical weight reduction, but I did keep the front bumper support.

 

Still have the stock PCM.

 

Are you running speed dencity?

I have set up many cars using a dry or wet first stage.. I personally prefer to have a after market computer in the car so that I can safely program the computer to add the extra needed fuel for the dry stage.

If the car has a mass air meter with alittle work to the mass air meter you could have easy and reliable way to tune in the dry system. However on a speed dencity car with stock computer I personally have not found anything to support adding the fuel on a dry system with speed dencity that I trust enough to put on my car. We are currently working on something but we are no where close yet to telling about it.

I personaly would put a wet plate system on for the first stage if it were my car. But Like I said everyone has there own preferences.

Dave

 

SD tune. Sounds like a plate for the first stage is the way to go. What is the recommended method to retard timing for this application? I've got a timing tuner and was thinking of using that for the dp 2nd stage, and using the iat resistor for the first. Is there a better method? Thanks.

 

just curious, where are you located in pa?

 

Roughly an hour north of Harrisburg.

 

where like williamsport/lycoming area?

 

...uhhhh...Dave....
did you forget about EFI live w/COS 5...it allows you to run a nitrous tune that will be activated off a ground trigger.

 

Ray I forgot about that. I need to studdy up on that alittle..

Dave

 

I have always just pulled the total amount needing pulled on the first system. I wish there was something out there like for old school applications where you can pull the timming in stages. I have used the timming tunner on many set ups. I have never tried the Iat mod. This would be a great questions for AL..
Dave

 

The new NOS controller can do 4 stages, and the HSW Interface is the choice for fueling as there is no need to go after market PCM, just use the stock PCM. Actually there is no reason you can't do 3-stgs dry. If you already have the EFI Live COS 5 then it's a good deal, otherwise for about 150 bucks the Interface can't be beat for fueling needs wet or dry, and it can also pull the timing you need initially, and then can pull more progressively as you add nitrous or another stage (full custom fuel and timing curves; I have three seperate timing curves currently depending on what stages/size and takes about 2 seconds to go from one to another). All that this tuning tool can do has not yet been seen, i think of new things weekly and will do a complete write up someday. I do have the Interface, but at this time my 3 stage is complicated like dave stated, but will likely go with the NOS controller soon to alleviate the wiring complexities, though it works fine. So many ways to go these days and options are numerous, like running a dry plate as your first stage (yep dry plate kits out there) and a DP wet or dry as a second stage and your choice for a 3rd stage. Currently i have a DP Dry as 1st, a dry dual nozzle as second, and another dual nozzle dry as third on a button, but will be changing 2nd stg out for a Dry plate real soon. Racetronics also has 80lb injectors out now that will also work with stock PCM so it's getting easier and cheaper to go big dry n2o all the time. There are also fueling options for going all dry that don't require a stand alone tank, though there is a stand alone in the works for dry guys whom wish for one. I chose to go dedicated fuel system that is controlled by the n2o activation and on a window switch. have fun and let us know your choices and progress. By the way, if you have HPT it also can do a Dry tune that does not effect the n/a tune, which none of the other methods effect n/a either and there all online and ready to go when your system is activated. I do have some Dry tuning write ups for insight, if you would like to see them let me know, as they have been banned from the site, so just pm me and I will link ya. Also have about 5 or 6 resistor tricking write ups, however, they have never caught on for various reasons, mostly they are to complicated and/or limited.
Robert

 

stages for sure, and the stock pcm will do it. i run stock pcm, pretty sure a few of the others (atv i think) run stock pcm. i never like the progressive thats why i never tried it.

do a plate set up for 150 wet and a nice direct port for the rest with the right fuel set up you will be on your way

 

The one thing that hasn't been mentioned is drivetrain tuning. We can have all the power in the world and if we can't get it to the ground, then it's wasted. So, I don't have much in this deptpartment as there are only a couple Vettes to ever get into the 8's with an IRS. I guess my point is, if you get your added power figured out, then getting it to launch is next, and you may already have this covered, though 8.x guys are not the norm yet in the n2o/lsx realm... A few of the guys posting have this covered, but the majority of us are still a bit behind.
Robert

 

No doubt. One of the best in the business is working on my chasis set up. I posted in this section for n2o specific set up advice. Thanks for your response.