Meth vs Nitrous for FI
#1
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I think we all know the benefits of using meth and what has to be done as far as tuning when using meth. But my question is, since the nitrous can be had for a cheaper price, what needs to be done as far as tuning, ie afr, timing, boost? Also, where would be the best place for nozzle location?
#2
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Those 2 things have completely different effects as far as I know. The meth is like adding a higher octane to deter detonation under boost. Nitrous does not do this. Hence why people run stand alone fuel cells with race gas for when they spray or run a little higher octane in tank when spraying nitrous. And as far as I know everyone suggests tuning without the meth as well. Then sprayin the meth on top if needed. Only time I have seens cars tuned with meth is for basically race only applications. Or at least thats what I have found to be suggested.
So I'm a little confused about your meth tuning comments. Now I have heard of nitrous being used to help turbo spooling in certain applications. But I do not believe it is possible to use nitrous in place of meth since they do not serve the same purpose.
So I'm a little confused about your meth tuning comments. Now I have heard of nitrous being used to help turbo spooling in certain applications. But I do not believe it is possible to use nitrous in place of meth since they do not serve the same purpose.
#5
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Those 2 things have completely different effects as far as I know. The meth is like adding a higher octane to deter detonation under boost. Nitrous does not do this. Hence why people run stand alone fuel cells with race gas for when they spray or run a little higher octane in tank when spraying nitrous. And as far as I know everyone suggests tuning without the meth as well. Then sprayin the meth on top if needed. Only time I have seens cars tuned with meth is for basically race only applications. Or at least thats what I have found to be suggested.
So I'm a little confused about your meth tuning comments. Now I have heard of nitrous being used to help turbo spooling in certain applications. But I do not believe it is possible to use nitrous in place of meth since they do not serve the same purpose.
So I'm a little confused about your meth tuning comments. Now I have heard of nitrous being used to help turbo spooling in certain applications. But I do not believe it is possible to use nitrous in place of meth since they do not serve the same purpose.
My concern is for when spraying, what is the target afr and timing suggestions.
#7
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15psi boost
w/o nitrous 10.5x's @ 128
w/ 50 shot 10.30's @ 131
My converter is a TCI streetfighter 4000 stall rebuilt by Coan. They told me to not even bother putting it back it cause it will never hold up. Hughes built me one and I had problems and sent it back so I threw the TCI back in. It works ok but im sure its losing some.
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#8
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I think we all know the benefits of using meth and what has to be done as far as tuning when using meth. But my question is, since the nitrous can be had for a cheaper price, what needs to be done as far as tuning, ie afr, timing, boost? Also, where would be the best place for nozzle location?
#11
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Ok, I'm on the same page now I think. Your weighing options between meth w/more boost or just adding a nitrous kit right? The way it was worded in the OP confused me a little.
I'd say actually in the long run meth would be the better option. Especially with a turbo where you can run a boost controller & change boost levels whenever you want to take advantage of the meth. Depending on how hard you push it while running the meth will determine how much is used. Like Trust said, a full tank of meth up front can last a while & a 5 gallon container could last you months. I think you'd run through more nitrous than meth honestly & eventually the nitrous would end up costing more to keep on hand than the meth.
But thats just my opinion.
I'd say actually in the long run meth would be the better option. Especially with a turbo where you can run a boost controller & change boost levels whenever you want to take advantage of the meth. Depending on how hard you push it while running the meth will determine how much is used. Like Trust said, a full tank of meth up front can last a while & a 5 gallon container could last you months. I think you'd run through more nitrous than meth honestly & eventually the nitrous would end up costing more to keep on hand than the meth.
But thats just my opinion.
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How long does $40 dollars of n2o last and how long does $40 dollars of Meth last. Meth is cheaper. A bottle would last me 4-8 passes, 5 gallons of meth has lasted me around 8 months.
#15
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i say do both! ![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
Meth to help reduce IAT for starters then a 50shot of N2O to REALLY get the temps down! would be like having an A2W setup with an ice box but whenever you wanted it! lol
Chris.
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Meth to help reduce IAT for starters then a 50shot of N2O to REALLY get the temps down! would be like having an A2W setup with an ice box but whenever you wanted it! lol
Chris.
#18
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Apples vs oranges buddy.. Meth increases octane, and adds fuel which decreases detonation. Nitrous leans out the mixture and effectively increases detonation possibility. The only thing that they have in common is they both bring IATs down. A meth kit is not at all a big initial hit. You can get a very complete and comprehensive brand new kit for $500-600. Whats a new nitrous kit cost again? I average 1 gallon of meth every 1000 miles. I just filled up my 5 gallon reserve for $18 a couple weeks ago. That will most likely last me a year. Meth FTW IMO
#19
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5.3L 8.6:1 comp. 11.4-11.6: AFR. Timing set at 19* No MAF.
15psi boost
w/o nitrous 10.5x's @ 128
w/ 50 shot 10.30's @ 131
My converter is a TCI streetfighter 4000 stall rebuilt by Coan. They told me to not even bother putting it back it cause it will never hold up. Hughes built me one and I had problems and sent it back so I threw the TCI back in. It works ok but im sure its losing some.
15psi boost
w/o nitrous 10.5x's @ 128
w/ 50 shot 10.30's @ 131
My converter is a TCI streetfighter 4000 stall rebuilt by Coan. They told me to not even bother putting it back it cause it will never hold up. Hughes built me one and I had problems and sent it back so I threw the TCI back in. It works ok but im sure its losing some.