mattl31

iTrader: (8)

I'll do my best to make the write up detailed, however it will vary a lot from kit to kit based on what components you select. But I'll try my best for you guys. Is there any area you guys would like me to focus on?

Ping King

iTrader: (20)

watch spraying through shifts...you may be rebuilding that automatic soon.

mattl31

iTrader: (8)

i wont be spraying through shifts....just doing some fancy switch work
oh and also....the fpss comes set at 35 psi. should i leave it there or up it a bit?

mattl31

iTrader: (8)

TTT about the fuel pressure safety switch. anyone know where to set it at? i have a fuel pressure gauge and everything. ive been told stock ls1 runs 45-60 psi

GIVE EM' THE BIRD

iTrader: (1)

please finish this write-up when your done!

Strahley

iTrader: (4)

I used an exacto-knife to remove the shrader valve. Came out in just a few seconds. Used the exacto-knife like a screwdriver

As for the FPSS, I'd leave it at 35 psi. The idea of it is to kill the system if the pressure drops that low, and if it drops below 35 psi then the fuel pump probably died and isn't going to kick back on. If you have it set at say, 45-50 psi, the fuel pump may just have a little hiccup and briefly cut the solenoids out, but back on again. If it did this several times in quick succession, you can probably see the damage it could cause. I'd rather not beat my solenoids by having them trigger on/off multiple times on the same run

mattl31

iTrader: (8)

im not as worried about the pump dying as i am worried about running out of fuel. i should have plenty of fuel pump and injectors for a stock car and a 125 shot shouldnt I? what does everyone think?

quickblade

Focus on your blow down tube... Where did you mount that bad boy. Or actually if you can, lets see a picture of it. Unless its not in yet....

And you said you are installing dry kit.. dont forget to remove the MAF screen.

mattl31

iTrader: (8)

i'll probably get flamed for this but i'm not doing a blowdown tube....yet. the bottle will be used track only so i hadnt really thought about it just yet especially with the winter months coming up, the car wont be out much. I've been told you dont have to descreen the MAF? still wondering about the FPSS for anyone who has some insight.

uncle ray

yes just go and get the little a/c valve kit at a parts store and keep the tool. i payed something like $5!!!

mattl31

iTrader: (8)

got the valve removed and everything is now functional. taking pics today. still wondering about the FPSS though!

Todd157k

iTrader: (5)

Set the fpss at 35 (ish) lbs. You can use an air compressor and a DVM to calibrate it.
What size injectors are you running? Any way of watching DC or AFR?
If not, start with a small shot (50 max) and watch your fuel pressure and plugs. I'm assuming you know how to read plugs since you're not a new mechanic.
Also, what's this "tricky" switch set up you're thinking of to not spray through shifts????

mattl31

iTrader: (8)

oh no no the switch is just an arming switch...im just going to kill it through shifts. i dont have traction in first anyway so it'll just be 2nd and 3rd that ill be using it until i spring for slicks. im sorry but what do you mean by DC? i'll only be doing the 50 shot until I get my dynotune wideband where ill run a 100 hit. and yes i'll be keeping an eye on those plugs. got some TR6's yesterday. those should be fun to install

Cantalope Kid

iTrader: (2)

I thought you could use the nitrous through the shifts in an A4? How else does a WOT Switch work in conjuction with a window switch? It comes on and stays on while in correct rpm with throttle wide open. If it was so bad to spray through shift why are kits sold with WOT switches?

I realize in your case you are going to use an on/off button instead of a WOT switch but how do you plan to time the on/off with the precision shift of an A4?

I say stay away from manual activation and go with a WOT switch. They are only $12.xx for goodness sakes. What happens when you have an emergency with your hand on the on/off switch? Your instinct is to drop it to grab the wheel. Opps is the last thing your car is gonna be saying when you missed unarming the nitrous system as the rpms drop rapidly. A WOT Switch is an easy solution. You have an emergency you instinctivly take your foot of the gas to hit the brakes, N20 turns off automatically. They are included in kits for a reason. WOT Switch= 1 more safety measure.

TwistedSS

iTrader: (3)

Some people don't spray through the shifts because its hard on an old transmission. Never had any problems with that in my old automatic car and my friends T/A that went 11.70 on drag radials...with stock exhaust and a 125 dry shot.

mattl31

iTrader: (8)

Cantalope Kid- I AM using a WOT switch...look in the pictures. ill have the pedal to the floor when im running down the track and IF i decided not to spray through the shift ill kill it via the arming switch, and turn it back on after the shift. no, probably not the most precise way to do it but i'd rather spend the money on a wideband to monitor the A/F than drop money on a window switch. sorry, i was kindof unclear in my posts.

Twisted SS- yeah i figured that a few passes spraying through the shifts shouldnt kill my tranny at 48XXX miles. so I'm leaving the FPSS at 35 psi everyone!?

Todd157k

iTrader: (5)

DC= Duty Cycle. It's a log of how much the injectors are working to keep up (or try to). VERY important when running a dry kit.

Window switches aren't all that expensive. Specially when compared to the price of a motor or tranny. GET ONE. If you can't afford it right now, WAITto install, THEN BUY ONE. Things happen way too quickly for you to turn it on/off/on at the right times. Now, having said that, I sprayed through the shifts all the way up to 100 shot. At 100, I put the ws in. I figured it wouldn't be any different that heads/cam/headers and running that extra hp through the shifts. I also had adjusted my shifts for harder shifting which would be easier on the trans but harder on the rest of the drivetrain.

mattl31

iTrader: (8)

so pretty much you're saying im better off (safer) to just spray through the shifts?

quickblade

Yes Please tell us of the sparying thru the shifts. I have automatic 02 z28, 50,000 miles on the car. garaged, etc. my dry kit should be here today, hopefully, maybe tomorrow, but I wanna here about the hitting thru shifts..

can it safely be done, or are you taking a chance on the tranny???

Todd157k

iTrader: (5)

Can it be done.. yes.
Is it safe to do so... not really
Will it harm it.. eventually

Small shots aren't an "instant killer" however I wouldn't make a practice of it if you don't have to.