No problem. The stock block can take up to 500whp and I've actually seen people run a whole lot more on their stock block but the general consensus is that once you reach 500 whp it is a good idea to upgrade the internals. E85 or meth don't really have anything to do with your block being able to withstand 500whp other than allowing you to run higher boost safer. You can run 91-93 oct and acheive 500whp as well, just at a lower boost level.

 

Keep it coming! Ihave similiar mods just a perrin cbe, hfc, downpipe, apexi flter, and a good tune at 21psi, 330 whp but looking for a little more... Whats my next step a licp and a 02 housing?

 

how much do u think the o2 housing will produce? and how does it make a different?

 

I have the EPM O2 dump and people have seen 15 whp gains on it.

 

Detroit.. generally from what I've read a Megan 02 housing or a well ported stocker can net you 10-15whp depending on the dyno, but once you upgrade the turbo the 02 housing is no longer needed. Also, get retuned at 23psi which is the optimal safe spot, you should gain another 10+awhp from just bumping the boost up 2psi plus the gains of the 02 housing.

 

thanks! but why won;t u need the o2 housing anymore once the turb ois upgraded?

 

Well I will be chnging my cams to Kelfords 272's, I will also be going back to AMS to get tuned. I will let you guys know how she does.