Hey guys gotta question how much of a shot can the sr20de block handle any time slips or dyno slips that can confirm will be helpful well i have a b14 ser and a b15 spec v i know that the qr25 is not a reliable as my sr20 so guys help me out here..

And is it safe to put nitrous on the sr20ve..thinking bout doing the swap

well if you run a progressive shot, ive read some people running up to 150-175. But if you're just using a single shot, a lot of nitrous users here dont exceed more than 100shot on a stock setup w/ usual bolt ons and fuel pump upgrade.

I just setup my 75 shot, and hope to be running at the track in a week or two, ill post timeslips then :) *** kit do you have? and yes it is safe to run nitrous on the ve.

btw, i am referring to wet setup^^

Hey man ive have the zex wet kit w/ maximizer setup i purchased the zex window switch and i have dual bottle warmers its a good setup i just had my qr25de shit on me without a afr opps...

Hey man ive have the zex wet kit w/ maximizer setup i purchased the zex window switch and i have dual bottle warmers its a good setup i just had my qr25de sh*t on me without a afr opps...

iv seen a 100shot(dry) on a DE, and a forum member sprays his DE almost daily and the car holds great....

^^^^^ That would be me. LOL

Mind you I had stock 98 cams (tiny ass cams) when I was spraying the Zex 100 dry shot. I would no lie spray damn near daily. Just make sure your timing is backed off to be on the safe side. Always keep a spare set of spark plugs in your car. I had my spare set gapped at .30 for the 100 shot. Car loved it. With bigger cams you WILL need more fuel. Since you suck in more air AND more nitrous per each revolution with bigger cams you need to provide more fuel.

A very important thing to remember is to always use NEW plugs the FIRST time you change jets. That way you can tell if you are running lean or rich or normal if you dont have a wideband A/F ratio gauge or if you are not on the dyno. Spark plugs are cheap. Stock up on them. Learn what your car likes. Avoid temptation of bumping up your timing. Those extra 5-10 hp are not worth blowing your motor for.

I am now running a 255lph HP walbro fuel pump. Stock FPR. Zex dry kit (freaking AWESOME) JWT S4 cams, I/H/E and other stuff. Its fine on the 75 shot but with the new S4 cams im happy with a 35 shot or 55 shot. 35 shot puts me in lightly modified VE territory (I/H/E). I pulled a bus length on a VE B13 with my 55 shot. Easily. Walked a VW GTi with my 75 shot like he was standing still and that same night embarrassed some guy with his gf in a R-tune 350z.

These are graphs with an N/A dyno run at 10* timing and a 35 shot at 10* timing. With the JWT S4 cams and a 100 dry shot Ive passed the limit of my injectors. Made 251whp and 222wtq on the dyno but had to shut off at 6400rpm. It was getting way too lean. Im still on stock injectors but I will be getting 333cc and a bored DE MAF and they should hold me off fine for the 100 shot.

Dont worry about the bottom end of the DE. What you have to worry about is your clutch and PP, axles, tires and motor mounts. Beef those parts up and you shall have fun with no worries. Just make sure you dont lean out and detonate.

http://i561.photobucket.com/albums/ss59/conenubi701/Pict0157.jpg
http://i561.photobucket.com/albums/ss59/conenubi701/Pict0158.jpg

I personally don't see why you couldn't run a nice 200 direct-port shot on a i/h/e de w/ some nice s4's and a walbro 190.

And Vex630 why would you upgrade to bigger injectors when you could just convert to a wet shot? This way you won't need any reprogram of the ecu for the bigger injectors, which would probably be cheaper then buying some bigger injectors and a reprogram of the ecu.

just a thought....

btw I plan to spray a 100 shot on a NX wet kit on my VE. I already have a walbro for fuel, a sacc header(2.5"dp), VRS 3" exhaust, bpi inatke, and have a set of 16ve cams to throw in to boot!

damn great info guys keep it coming im learning more and more bout the sr20de as i search the fourm thanks guys

And Vex630 why would you upgrade to bigger injectors when you could just convert to a wet shot? This way you won't need any reprogram of the ecu for the bigger injectors, which would probably be cheaper then buying some bigger injectors and a reprogram of the ecu.



I second that!

Because I got sp00ked when I saw an over rev with a wet shot and a faulty RPM window switch. The fuel from the wet shot puddled in the intake and as soon as he shifted it all ignited and gave a nice firework display. Intake backfire. Took all the precautions. RPM window switch was set at 500 RPM before fuel cut. It was just defective and didnt work.

Also one less thing to worry about. I used to have a wet kit on my 1st B14 and I would spray a 100 shot. Cylinder 1 always was slightly lean, I would go bigger on the fuel jet but then Cylinders 3 and 4 would run rich. I had a z32 with a wet kit on it. I WOULD swap the wet kit onto my B14 but Id rather have the simplicity and safety of getting even fuel into all my cylinders.

333cc injectors with a bored MAF wont need an ECU reprogram with my mods. Im getting a Calum RT anyway for my B14 for my future turbo build. Might as well learn it.

Best setup for a BIG nitrous shot is a direct port progressive setup. I think a straight 200 shot is a bit too much on the rods. A progressive set up would be the best for something like that. Its not for me though because I have other plans. My nitrous on the B14 is only temporary until I finish an NX I just got and then I will spray a 75 shot on a VE motor and turbo my B14.

hmmm interesting story, yea i dont trust those window switches either.......and yea im only doing nitrous *** its cheap power,,,, upto a certain point, id rather push the limits of a sr20 with a turbo than nitrous, for easier tuning and reliability sake.

Now Vex630, heres a question for you......you use WOT switch on the throttlebody or use a button?

I use a Zex kit that taps into the TPS voltage wire. The zex box learns the voltage range on the TPS and only opens at Full throttle. It has a separate arming switch of course. But there is no need to push a button or add a WOT switch on the throttle body or under the gas pedal.

wow thats cool, lucky you lol

very good improvement !

I use a Zex kit that taps into the TPS voltage wire. The zex box learns the voltage range on the TPS and only opens at Full throttle. It has a separate arming switch of course. But there is no need to push a button or add a WOT switch on the throttle body or under the gas pedal.

Hey but ive had the same Zex kit for a while ...didnt you ever notice the inconsistancy of the way it sprays sometimes it sprays at wot..and then other times is sprays at almost wot....lol zex zex zex...gotta love em...LOL

Check your tps voltage or your tps. It did that with mine when I first installed it. Turns out my TPS was only reading 3V when it was supposed to be reading 4V at WOT. Adjusted it and it only sprays at WOT now.

yea i also bought the zex window switch for a good deal on craigslist for $100 so i will hook that up to my b14 as a percasion method...its cool its has a first gear pass so it will start spraying in 2nd gear...awsome