Well the kit is all installed including the bottle heater and the purge kit. I just have to change the plugs today and get the bottle filled. Gonna start by running the 100 shot jet with the 125 shot fuel jet. Gonna upload the nitrous tune today as well. Gonna be shifting at 6400rpm with a 7000rpm rev limiter. Keeping it in drive so if I see the tach flying past 6400rpm for some reason in drive, ill have time to let off. Before I got the kit I never realized spraying nitrous is so complicated lol...
HSW kit installed...
- Thread starter 98LSC32V
- Start date
98CobraStarLSC
Dedicated LVC Member
it is complicated, but the kits nowadays are pretty straight forward. Make sure you have a tank mounted gauge as well or some way to tell pressure.
Spray away and have fun!
Spray away and have fun!
keep in mind that in first gear your car will accelerate at 1K RPM's per second.
on the spray it's gonna accelerate MUCH faster, and might bump the rev limiter {which is a fuel cut limiter}
Cutting fuel on a N20 pass might not have the results you are expecting.
I would go into my commanded shift and lower it by 500RPM's and THAT might not be enough to keep from tickling the fuel cut.
Be careful...
on the spray it's gonna accelerate MUCH faster, and might bump the rev limiter {which is a fuel cut limiter}
Cutting fuel on a N20 pass might not have the results you are expecting.
I would go into my commanded shift and lower it by 500RPM's and THAT might not be enough to keep from tickling the fuel cut.
Be careful...
So you're saying on the 1-2 shift I should have it shift at 5900-6000rpm just to be safer? Good call man, 1st gear acceleration is already pretty ridicilious NA with the 4.30's... btw I have a pressure gauge mounted on the bottle it came with the kit.
I actually have the MSD digital window switch sitting in my garage but I won't get it installed in time for the track tonight... and they aren't running next Wed... my friend ran without a window switch for years on his 98 Z28 4L60E and never had any problems... knock on wood!
Gilby959798
Dedicated LVC Member
good luck Serge lets hear the times
htrdlincoln98
Dedicated LVC Member
Yeh man good luck. Lets see those slips. xlrviii has a very good point with the shifts. Shifting @ 6000 on the spray you wont even know the difference the first couple times. Its all going to fly by. Have fun.
kustomizingkid
Dedicated LVC Member
When you are getting everything dialed in you really can't command the 1,2 too soon the first time because you don't know what it going to happen and better safe than sorry!
Post some vids...
Post some vids...
Rev your car in neutral and notice how fast it "runs up the tach".
When you spray in gear it's gonna "run up the tach" faster in gear on spray than it does revving in neutral off the spray.
The first time I sprayed my mustang I thought the clutch blew up because the car "R'd" so fast.
now the suggestion I made about the shift point is based on the SCT software and the time difference between "commanded" and "delivered" shift points.
If it takes the transmission 1 second to fill the accumulator to bring on the next gear then your commanded shift point WILL be about 1K lower than your actual shift point is.
Now with sniper, I dont know if they have this 1K difference "fudged" in the background where you cant see it or how they do it.
In the sct software the actual value is the "commanded" shift point which greatly differs from the "actual shift point".
You might have to drop it more than 500, maybe as much as 1K.
On mine.. commanded shift is at 5800 but the actual shift takes place closer to 7K at WOT.
I'd try a safe and sane 5600 shift point for your "first couple of trips" in drive.
Just to be on the safe side.
If you find the car is "short shifting" on the spray then add the amount it came up short to the shift point..
I would take "baby steps".. you really dont want to smack the rev limiter while on the spray.
I might even go so far as to bump the rev limiter UP a little bit but again, you have to be very careful..and be prepared for "unexpected" stuff to occur.
If it were ME, lol I'd do some "short runs" just to get into the 1-2 shift.. that way your "prepared" to lift if anything goes crazy.
You should be fine without a window switch, but I wouldn't hit the button before 3K.
and you have to realize that when it starts spraying at 3K it's gonna be less than 2 seconds before it RIPS past 6K.
hope some of this helps...
When you spray in gear it's gonna "run up the tach" faster in gear on spray than it does revving in neutral off the spray.
The first time I sprayed my mustang I thought the clutch blew up because the car "R'd" so fast.
now the suggestion I made about the shift point is based on the SCT software and the time difference between "commanded" and "delivered" shift points.
If it takes the transmission 1 second to fill the accumulator to bring on the next gear then your commanded shift point WILL be about 1K lower than your actual shift point is.
Now with sniper, I dont know if they have this 1K difference "fudged" in the background where you cant see it or how they do it.
In the sct software the actual value is the "commanded" shift point which greatly differs from the "actual shift point".
You might have to drop it more than 500, maybe as much as 1K.
On mine.. commanded shift is at 5800 but the actual shift takes place closer to 7K at WOT.
I'd try a safe and sane 5600 shift point for your "first couple of trips" in drive.
Just to be on the safe side.
If you find the car is "short shifting" on the spray then add the amount it came up short to the shift point..
I would take "baby steps".. you really dont want to smack the rev limiter while on the spray.
I might even go so far as to bump the rev limiter UP a little bit but again, you have to be very careful..and be prepared for "unexpected" stuff to occur.
If it were ME, lol I'd do some "short runs" just to get into the 1-2 shift.. that way your "prepared" to lift if anything goes crazy.
You should be fine without a window switch, but I wouldn't hit the button before 3K.
and you have to realize that when it starts spraying at 3K it's gonna be less than 2 seconds before it RIPS past 6K.
hope some of this helps...
I know.. right?
I've got most everything needed to put a kit on my car tonight....even a FULL BOTTLE.. but dammit I'm resisting that urge.
"IF" everthing goes the way he plans and everything "works right".
he should easily net a 12.80 or .90 out of that car.
the NA slow rev to 3K in first gear is gonna be the hardest part to "wait thru".
After that.. he's gonna have a BIG SMILE on his face all the way up until something "gives" or "pops", or "sneezes".
he should easily net a 12.80 or .90 out of that car.
the NA slow rev to 3K in first gear is gonna be the hardest part to "wait thru".
After that.. he's gonna have a BIG SMILE on his face all the way up until something "gives" or "pops", or "sneezes".
my friend can beat up your friend
htrdlincoln98
Dedicated LVC Member
The sniper tuner has this delay already figured into the software. I can only raise the rpm from stock at which the Wot shift occurs. NA the tune is on with the spray it is a little higher than what i tuned for. Alittle less than 200 rpm. With that in mind I only have 3.73's so with 4.30 it might be 200-300 off. Also I have a shift kit install as you don't 98. You should be plenty safe at 6000 but raise the limiter a tad.
kustomizingkid
Dedicated LVC Member
HAHAHAHA.... they don't have the delay figured out, like you just said... OMG I can't even explain how hard I am laughing right now...
kustomizingkid
Dedicated LVC Member
Did you read what you said??
htrdlincoln98
Dedicated LVC Member
No I canntt read??????
how could THAT be?
when no two cars have the same acceleration rate..
and a NA car accelerating at 1K per second in first gear is gonna be really slow compared to a sprayed car accelerating in first gear.
That makes no sense......
are you datalogging these values?
Or are you referencing the widely known inaccurate factory tach?
I tested it out on a closed course (of course) and it runs good. It shifts at 6500 on the spray with the commanded shift at 6000rpm. With the 125 fuel jet and 100 nitrous jet its probably only seeing around 80 horsepower but better safe than sorry...
kustomizingkid
Dedicated LVC Member
If you had a WB02 you could play on the team that knows what is going on with real data and makes intelligent informed decisions based on that data.
wow ya'll dont have control of part throttle shifts?
bummer...
must be a PITA using a hammer when the correct tool is a screwdriver.
htrdlincoln98
Dedicated LVC Member
I dont make the software I am just stuck using it. I have my shift 1-2 and 2-3 set at 6800RPM NA and N2O tune. Na it shifts at 6800 with n2o it shifts alittle later than 6800 but not over 7000. You guys are the computer nerds tell me how it works. haha
that is a fairly safe starting point
hell the stock fuel table will support a 5-6 PSI supercharge or a 100 shot with NO WORRIES.
you might consider putting fuel back to stock, while you play with the kit.
that'll give you a much larger safety margin..
Especially since you haven't verified that your commanded AF is actually being delivered via WB
well I'm telling you the factory tach shouldn't be used to judge.
datalog the actual parameter...
Factory tachs can be 500-1000RPMs in error and are the most accurate in the middle of their sweep, which is about 3K.
I'm jus sayin'...lol