I'm using a 75 wet shot on my 99 Cobra and it is running really good with that but I was wondering if upping it to the 100 shot would do any damage to my motor? I have 1 stage colder spark plugs an tightened up my cap, I am also running factory timing not sure what that is though. I have Flowmaster cat-back exhaust and mac off-road x-pipe. just wanting to get your guys .02
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B303 Hydraulic Roller Camshaft,Forged Pistons,Forged Rods,Double Roller Timing Chain,Iron Crankshaft,Ford Racing Aluminum GT-40 Cylinder Heads,Roller Rocker Arms,MSD Distributor,Anderson Ford PMS EMS,Cobra Intake, 30# Ford Racing Injectors,BBK Adjustable FPR,ASP Red Under drive Pulleys, Ford Racing AC Eliminator Kit,Performance Power steering rake, Steeda Shocks w/ KYB Struts, 3.55 gears w/ Eaton Limited Slip w/ stiffer shocks, BBK Cold Air Intake,Calibrated PRO-M MAF for 30# Injectors.
Oh Man, bolting up a NOS Kit on a 99SVT not having any idea what your WOT spark advance is?? Wow can you say ticking timebomb? I bet your knock sensors are kicking on when your squeezing. I could go on for hours, haha.. Well to answer you intial question I'd say a 100 jet would be the max with the stock Rods, your fuel pump duty cycle will be close to 100% as well with the stock setup, you'll need a Kenne Bell BAP if you don't wanna pull the tank and replace the pump.. Also what plugs are you running and gap??
I talked to a few of my dad's buddy's that run nitrous an they where telling my timing is fine where I'm at for a 75 shot but don't go more than that. These are the plugs I'm using Autolite XP Xtreme Performance XP103 an the gap is .045.
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B303 Hydraulic Roller Camshaft,Forged Pistons,Forged Rods,Double Roller Timing Chain,Iron Crankshaft,Ford Racing Aluminum GT-40 Cylinder Heads,Roller Rocker Arms,MSD Distributor,Anderson Ford PMS EMS,Cobra Intake, 30# Ford Racing Injectors,BBK Adjustable FPR,ASP Red Under drive Pulleys, Ford Racing AC Eliminator Kit,Performance Power steering rake, Steeda Shocks w/ KYB Struts, 3.55 gears w/ Eaton Limited Slip w/ stiffer shocks, BBK Cold Air Intake,Calibrated PRO-M MAF for 30# Injectors.
Don't listen to your dads buddies, in your initial thread post you said you've NEVER checked to see where your timing was? So how are those guys gonna magically know what Air Fuel Ratio your seeing at WOT when your on the juice, sorry that really isn't good advice their giving you. Get it on a dyno or the very least a Wideband O2 to see what kinda spark advance your seeing, plus you haven't datalogged your fuel rail pressure to see if it drops drastically when the fuel solenoid on the Nitrous Kit opens.. The stock pumps in the 99's are only 100L/ph with 24 lb injectors, So many factors are in the mix! Like I said ticking timebomb plus I GUARANTEE with a correct Nitrous tune you could pic up close to .5 in the 1/4 with your current combo! I don't want to get you scared with your NOS kit their actaully quite safe if you install them correctly and that means not just bolting it on without a tune, I don't know any of my friends with NA 99-01's running squeeze that don't have a specific software program they load into the ECU when running juice whether it be a flip chip like Diablo Revolution or a hand held (Predator,SCT Xcal) that hold multiple tunes!
Thoughts on bigger Nitrous Shot? 1999 cobra 
. I have Flowmaster cat-back exhaust and mac off-road x-pipe. just wanting to get your guys .02
