Id say go with the e-tune. You can get good numbers with 93 but you can make a little bit more power with E and be safer. Ethanol decreases the chance of detonation due to the higher octane.

 

"Numbers" are only relative to the dyno you run on. Find yourself on a liberal dyno and a very aggressive 93 octane tune, sure you'll hit 340. Find yourself on a realistic and well calibrated dyno, 340's not happening on a stock turbo without ethanol. There are plenty of 300whp balts kicking around that will mop the floors with a similarly modded balt making "330-340whp". Just saying..

 

That should be easily do able with Opel injectors. 23psi should be 345-350 whp and 390 wrtq at sea level.

 

400 wrtq on 93 means you are spiking close to 29psi and it is falling off hard which is why it goes to only 319 whp. There is no comparison for how much faster they are on E-85 or E-47 vs 93 there is a massive powerband difference at a given boost level not just the peak numbers.

 

And larger fuel lobe for the hpfp to support the additional fuel demand, particularly when adding the larger opel injectors.

 

Yes

 

I'm only 600 feet above sea level. I can run an E-47 mix. Fuel type isn't the problem. Just trying to make the most of the mods I have.

 

E-47 and E-85 make about the same amount of power if wg settings and air loads are the same. Meth on the same settings will normally make a little less power unless injecting a huge amount of it.

 

Do E-47 14% less fuel mass load and will make the same amount of power as E-85.

 

That's what I figured Should save the fuel lobe a bit too.

 

No real need for the larger hpfp cam lobe with e47 on the stock turbo.

 

What in the hell is E47

 

It's 1/2 premium unleaded and 1/2 e85.

 

Nope plenty of injection widow to open up if need be on E-47 and stock turbo. The 14% less fuel mass vs E-85 helps.

 

I thought every member on here knew that 50% E-85 and 50% E-10 gasoline blended is E-47.

 

Oh no doubt only on the stock turbo. Any larger of a turbo you're just basically pulling back on power to maintain proper and safe fueling. What worries me a bit though are the folks running the Opel injectors by themselves without a larger hpfp cam lobe to support them. You think you had rail pressure and idc issues before?? LOL

 

I got a S-256 on E-47, stock injectors and stock cams to 30 psi (90% wg duty cycle) with no injection window misfire issues even at 7200 RPMs. His injection times are pretty long up to 6.9 MS up top and 8 Ms as it spools at 3600 (I have the injection start angle advanced as far as it can go without causing misfires) and his IDCs are up to 36% up top but it holds 17 mPa rail pressure and no misfires at wide open at all. I borught it up slowly starting at 20psi (60% wg duty cycle) 2 psi (10% on the wg) at a time expectiong to get to around 24-25psi and start encountering misfires but I kept on bring it up with no issues. Car moves 48-49lbs/min max up top at 30psi. I do not remember his screen name but his name is Cody.