If you took two cars with the same mods, for example: 3" TBE, Intake, and Cams.

If one of the cars had a 50 shot and the other was running Meth, which do you think would run the quarter faster or would they run similar times? Also would nitrous or meth change the outcome in a roll race?

 

If it's just a 50shot, then I think it would be pretty even. You will get about the same power gains from both as long as the meth is tuned properly with raised boost. DSMotorsports could give you a more detailed explanation as an avid N20 user, though.

 

I'm interested in what DSMotorsports has to say aswell, he loves his nitrous.

 

Going to come down to how much airflow/o2 content you can get out of your turbo setup and the octane of the fuel used.

Nitrous really needs high octane fuel to be of use. On pumpgas I would be wary of spraying more than a 50 shot on top of a "tuned to the limit" setup. At 50hp on pumpgas with the stock turbo and fmic I had to pull out 2-3* of timing compared to what I could run off the bottle. It mde about 40whp and 3.5-4mph gain. You have to be carefull with nitrous on pumpgas for the same reasons you can't just crank the boost to 28psi on pumpgas...you hit the knock limit of the fuel before you run out of oxidizer. If your base tune is very conservative you might be able to run the 50 shot with no timing retard at all. depends on how aggressive the tuneup is before you add the nitrous.

The meth would allow you to run more boost/timing and possibly maximise the stock turbo/fmic/pipes combo assuming your running good pump gas in the tank. I don't have much first hand experience with meth kits YET, but getting 40whp isn't out of the question on pumpgas.

If both cars can run racegas in the tank there is no contest..nitrous car will win becuse the meth car won't have any significant advantage. If both cars are limited to pumpgas in the tank..it's a tough call, I think it would be very close.

Im back down to little mods on my car, so I will play around with this stuff this season.

Right now all I have is 3"TBE, MBC, walbro 255, clutch, 272 cams.
stock ecu, injectors, fmic, pipes, bov, intake, airbox,airfilter.

I have my nitrous kit sitting in a box, needs to be relocated and rethought.
picked up a shurflo pump, M5,M7,M10,M15 jets, and some parts to make a DIY meth kit. Im still thinking about how to combine these and run with stock ecu/AFC or something budget/cheap.

 

^ Good info, I probally won't be running race gas much, even if I did goto the track.

I want to go with the nitrous route, maybe I just won't spray as much, maybe just a 35 shot or somthing since i'll be on pump.

 

If you are running meth would you notice a diff. with a 50 shot or would it be a waist.

 

If you are running a meth kit WITH a nitrous shot, I think they would complement together well. The ntirous gives additional oxydizer/power potential while the methanol gives the additional octane to be able to use more of it.

That's one of the projects in my head at the moment. Running the output of my DIY meth kit into the fuel side of my wet fogger nozzle. The main issue is getting the activation right. you can't just use one relay for both nitrous solonoid and meth pump becuase the nitrous starts spraying instantly, while the meth pump takes time to spin up and pressurize the line. you would have a wicked lean spike when it first comes on.

 

would it matter if it is a dry shot or wet.

 

No, for the most part the engine doesnt' care where the fuel comes from. So long as it is atomized and distributed evenly, it can come from anywhere.

 

I have seen the differences coming from dsms. A guy I know with a 1g laser with fpgreen and supporting mods. He ran nitrous Im not sure what shot it is, but he ran a best of 11.55 or something with the spray and with meth he has ran a 11.45. He also tried running meth+spray one time and couldnt get below 11.80s.

 

I really have to wonder what conditions and what tuning issues would cause the car to slow down when combining high octane fuel and nitrous. This is like saying "I put bigger turbo on my car and put in racegas, and went slower". In that situation the cause is obviously a tuning/setup/driving/mechanical issue and not a fundemental problem.

In theory nitrous oxide and methanol go hand in hand and should play well together. One adds power potential with additional oxygen content, the other adds octane and temp drop that allows higher power productions.

 

Wouldn't nitrous also equate to a temp drop? Maybe not as significant as meth but should still drop intake temps.

 

nitrous and methanol both cause a temp drop when they change phase from liquid to gas nd becuase of the pressure drop from the nozzle to the ic pipe. The nitrous probobly causes a much larger temp drop, but the main power producer of nitrous is oxygen content, not temp drop.

 

DSMotorsport, do you recommend a certain kit/brand to run?

ive never ventured into N20 in all my years, but ive considered it an option to get a extra advantage when needed.

 

I like NOS brand kids. My experience with NX stuff is that they don't performe any better, the solonoids look nicer, but in reality are just overpriced. There is no performance increase with some fancy aluminum fittings vs brass.

I can't justify the cost of NX over NOS.

niether company makes an evo8 specific kit, so you got to buy a generic wet kit and figure out what adapter fittings and brackets needed to fit it to evo.