Apologies if this has been answered, search isn't working.

Just picked up a 90mm wet plate system from Nitro Daves which I plan on installing this week. 2000 TA with the mods listed in the my signature. I eventually want to pick up a wideband, but I've decided before I start spraying I'm going to start with fuel pressure and nitrous pressure gauges along with a fuel pressure safety switch. I've been doing some searching around the net and seen quite a few options with a pretty wide range of prices. I really don't like the idea of routing nitrous and fuel lines inside the car (especially that close to one another). So I'm leaning towards electric. First question, what's a safe minimum fuel pressure on a 100 shot and what is the normal fuel pressure range on the LS1s? Second anyone have any recommendations on vendors or manufacturers from their experience? This will be a first time for me running nitrous so any other input would be appreciated.

As a side note, Nitro Daves took good care of me, shipped promptly, and were professional. Highly recommend doing business with them.

 

Hi Mike,

On the fuel Pressure, 58-60 PSI is normal, when WOT I have seen my drop to 52 PSI (stock C-5 Pump). As long as your AFR is good you should be OK.

Gauges I went with all Dynotune, their Electric Nitrous and an LC-1 WB. I am using an autometer Sending unit (no Gauge) to log fuel Pressure to my laptop.

If you are going to get into tuning carefully select your gauges and make sure they are compatible with whatever you intend to use (likely EFI Live or HPT). Most like a 0-5V type sending unit. The autometer gauges seem to fit nicely into the logging picture.

Consider a Wideband over the fuel pressure gauge if your going to be spraying.

Beer

 

If you don't want to fork out the money for a wideband air/fuel, which is the only one worth buying, you should consider a pyrometer. Put the sensor right outside #1 in your header. When your spraying, #1 will usually lean out first. A pyrometer will pick this up, because when you start running lean, your exhaust gas temp goes up. Just an idea...it's what I'm doing.

 

The more I've thought about it, I think you've got the right idea. The fuel pressure gauge really wouldn't do much for me except help troubleshoot if I was going lean which the most accurate way to tell would be the wideband. I've looked around a bit and now the question is do I go with one that has some integrated logging capability or do I use a laptop based logging setup. I was looking at the PLX group purchase or the zeitronix because of its logging to a laptop capability. Any opinions on these as options?