How many PSI of boost with meth?
#8
Boost Pope
![](/mt2011/images_td/ranks/supporter1.gif)
![](/mt2011/images_td/ranks/smod.png)
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,339
Total Cats: 6,793
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
In very simplistic terms, the reason that the turbocharged engine is making twice the power is that twice as much force is being exerted on the pistons, and thus the rings.
#12
Former Vendor
![](/mt2011/images_td/ranks/supporter1.gif)
iTrader: (31)
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,103
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Not if the tune is good. If the tune is good, the rods are good for more power than the rings. The rings fail from cylinder compression and not boost. Once I get my setup running and tuned on 12psi, I'm going to jump to 18psi and use WI to control detonation and intake temps. Hopefully I can see 250-270rwhp. It'll be stretching the small turbo, but with WI it's doable. The boost doesn't kill the rings; the pressure does. 12psi out of a GT32 vs. 12psi out of a T25 are different animals.
#13
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
i havwe run 15-17 psi on my small 16g wich flows a hell of a lot more than your 2554 you will need to add timming and adjust fuel accordingly but there is no limit to what WI can do provided you set it up for the job and keep it supplied. I plann on more than 300 whp on mine with pump gas and No IC. I have a 40 overbore and some wiescos becouse i was to gready last time and didn't lift. but other than that all is good. I suggest you read the faqs by myself neongenisis, Ben etc and experiment with it we all offer up different tunning strategems but they are all essentialy the same. GL
#14
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Well I have some people telling me that just because I ran 7psi w/o WI, doesn't mean that I can just jack the boost up to 12psi with WI. I thought that because Methanol injection stabilizes the fuel to that of near race gas levels, and helps prevent pre-ignition means that as long as my AFR readings are normal, I can jack up the boost another 5psi without having to change timing or fuel levels. Am I right, or is retuning absolutly neccessary?