HOW DO YOU PLUMB IN A NITROUS KIT TO WORK WITH TBI,WHERE DO THE NOZZLES GO? ANYONE DONE IT? CHEERS MICK.

 

Check out N0S website. I recall there being a "spray bar injector plate" that goes beneath the TB unit.

I have insuficient clearance to hood so I will use a carb bonnet and place a single fogger nozzle in the ducting between the cone filter and my bonnet in the 4 inch tubing. That application is used I believe for the TPI/LT1. NOS states to place the nozzle away from the butterflies I assume to prevent iceing which did occur to me early spring.

 

I had it on my TPI and all it is just two foggers (newer kits I think are just one) on a plate under the throttle body. Should be simple to just get the pieces rather than an expensive kit. The TPI had a schrader valve on the fuel rail. All you had to do is use a valve stem remover tool to remove the valve and run the fuel solenoid off of that. You should be able to do the same with a fitting for a fuel pressure gauge for TBI that you can get at autozone etc. Run a fuel pressure gauge at least, better yet a pressure switch to shut down on low psi. My stock pump held up fine with the TPI, but with NOS it would be easy to destroy the motor so be careful with regards to fuel.

Ronny,

How far was your nozzle from TB? How far you think it should be? Tapping into the air intake would be far easier considering hood clearance esp on a bird!

 

Actually the individual pieces are considerably more cost than the universal kit(summit). I will use all parts cept trigger switch. I have an aeromotive FPR with unused ports. that will work well. I can reduce port on FPR down to -3AN and run NOS provided SS line -3an to solenoid to fogger. That is easy. Same on bottle to solenoid to fogger. In fact my 7.4L TBI has threaded holes on unit itself to attach the solenoid brackets on throttle linkage side. There was some sort of vac devise/diaphragm(WOT) hanging there (1994-1995) that I removed. I will pull 4 deg SA at MAP/WOT in SA tables to start. that is easy too. I will set PE (>3000 rpms>) at 12.0/1 to start. I have the jets table for 20lbs FP and I run 19 so that too easy. I monitor with pillar mounted Innovate WB and will log that as well to EBL WU logs. I run Delco TPI FP. NOS says preferred install on nozzle is 6-12 before TB. I did have what I think was a frozen butterfly 2 years ago so I presume that is good advise. Note tube between bonnet and AC. Any advise is appreciated.

 

Nitrous works also makes a tbi plate kit. I ran a 50 shot when the 305 was in my car. I wouldnt reccomend the kit tho. it is infrerior to some other manufacturers out there. The bottle brackets are flimsy, the supply line was short, no relay. the good part was the fuel tee that it came with.