Want direct port but afraid current setup can't handle it.

[high-psi-tsi]

Hey guys,
I'd like to make my next upgrade a shot of n2o . I really like the idea of direct port but I'm not sure my engine can handle a 75 shot right now (minimum of direct port correct?). I'd assume that running my car at 21 psi, I'd need to have race gas in the tank before I could hit the "go" button ( the only reason i ask is because i wasn't sure if hte cooling affects of N2O could offset the need for higehr octane)??? I guess what I really want to know is if you think my engine (stock internals on the bottom and top with ARP head studs holding the two together) can handle the boost I'm currently throwing at it plus the minimum shot from direct port or if I'm going to have to settle for a crummy single fogger wet kit. I posted my mods below...

small 16g turbo
fluidyne radiator
SAFC
pocketlogger
550's
walbro 190
Buscher FMIC kit with SS piping
2g ported exhaust manifold
3" turbo back exhaust
arp head studs (not in till i blow my headgasket )
magnecore 10mm wires
2g MAS and SS intake

 

[Max-Eclipse]

ok, im not a big nitrous expert, but from what ive been told by other people on here, you are better off just going with a single port wet nitrous system, because its just as reliable, cheaper, and easier to fix if it breaks...

 

[97TSIAWD]

I believe the 75 is going to add between 80-100hp, as were my dealings with nitrous for a 4.6L mustang. Now do you think your block can withstand or hold that much more hp? Have your list for your mods can be weeded out because they are not engine mods, like suspension, but from looking at the list even with the 190 fuel pump, I think you should be alright. If you buy a kit with adjustable nozzles, I would put a lower one in first, do some runs get some logs, then decide if you want to put the bigger nozzle on. Yes you will probably need the race gas as well. The wet kit helps by injecting more fuel with the nitrous, which I think makes it a bit safer.

 

[high-psi-tsi]

Thats what I was thinking. I figured the 75 shot would actually equal about 100+ at that boost with my turbo. 100+ though would probably put my car well over 400 hp (guessing my hp from 1/4 mile time 12.6 @ 111.6 with a 1.9 60', weight = 3100 with me in it). So your saying the direct port doesn't have any benefit except for allowing me to throw in a bigger shot??? I figured the consistency of it would be a big plus.

 

[97TSIAWD]

Thats what I was thinking. I figured the 75 shot would actually equal about 100+ at that boost with my turbo. 100+ though would probably put my car well over 400 hp (guessing my hp from 1/4 mile time 12.6 @ 111.6 with a 1.9 60', weight = 3100 with me in it). So your saying the direct port doesn't have any benefit except for allowing me to throw in a bigger shot??? I figured the consistency of it would be a big plus.

Well my friend ran it on his mustang before the TB. It cooled the intake charge some and was a great kit he actually went about a second or more faster. The problem was the tb switch which activated the nitrous broke, and stuck on while the TB was closed, causing a massive amount of NOS to accumulate in the intake, when he broke the TB lose by hitting the gas hard, the bottom end blew out of the car. That was the only downside. However if used and tuned properly nitrous is a great mod for any car. The biggest problem I always give myself as a reason not to get nitrous is the hp levels. The stock block can only handle so much before internals and bottom end need to be modified. However, a smaller shot or even the 75 shot if handled properly is not going to be overly dangerous for your engine. As long as you learn as much as you can before going the nitrous route, you will be fine.