i think my first turbo upgrade is going to be one of these and i was just wondering what kind of PSI i can run on it with an upgraded fuel pump? and what PSI with fuel pump and 550cc's?

I'll let you know in a few weeks. I have one sitting at my house. :P

I am running with that so far.. Still have to tune with my FMIC. But w/ the sidemount I am just being safe with 13psi from the Evo 16g wastegate. Thats the max the Evo 16g does without a boost controller.

Or are you asking whats the max you can run with 550cc and 255fp and a Evo 16g. Well that can be anywhere up to 24psi as long as you have the supporting mods.

Its pulls hard. Make sure you get a ported 02 housing or any sort of upgrade for that and it will make a major difference in spool up time. My spools super fast. Not too fast where I can't get traction but fast so I am not waiting.

you should log your car and see what is safe to run. What you are asking for it seems are theoretical numbers and that isn't a good idea.

Originally posted by BigBald
you should log your car and see what is safe to run. What you are asking for it seems are theoretical numbers and that isn't a good idea.

Exactly. All cars are diffrent. Because Bigbald can run 24psi on his setup doesnt mean you can and vise versa






#333

18lbs with a sidemount and probably race gas but it will all depend on what you have on your car.... but as said above what are your mods.. that will tell us what you can run safetly

ok sorry for the lack of info. before i get the turbo i plan to have UICP w/ type S BOV, N1 catback, 255 walbro fuel pump, some form of boost control, EGT and o2 meters, and i plan on getting very soon after if not before a DP and EVO o2 housing, 550cc's, and front mount intercooler. so how exactly do you do the dataloging to find out what PSI you can run?

pick a number from 13-24. Lean out till you knock or EGT's skyrocket and then richen it up a tad. :P

Try to get the 660's at least, 550's I think the most you can boost with that is 18psi just to be on the safe side.

Originally posted by MoreBoost
Try to get the 660's at least, 550's I think the most you can boost with that is 18psi just to be on the safe side.

No you can get 550's well over 20psi safely.








#333

The big 16g in the Evo 8 runs ~20-22psi no problem with the stock 550's. Anymore boost than that is just hot air on a 16g.

Originally posted by MoreBoost
Try to get the 660's at least, 550's I think the most you can boost with that is 18psi just to be on the safe side.

I heard that on a walboro 250 an SAFC wasn't strong enough to lean out 660's on a 16g?

Originally posted by Mattcky2k
ok sorry for the lack of info. before i get the turbo i plan to have UICP w/ type S BOV, N1 catback, 255 walbro fuel pump, some form of boost control, EGT and o2 meters, and i plan on getting very soon after if not before a DP and EVO o2 housing, 550cc's, and front mount intercooler. so how exactly do you do the dataloging to find out what PSI you can run?

Boost guage and boost control should be the first mods you do.

If you are getting a FMIC, then you'll have either custom IC piping or kit piping, so getting a UICP right now might be a waste of cash if you have the FMIC on the way. What do you mean by 02 meter though? SAFC to monitor 02s?

Get new 7 series (colder) plugs as well as upgraded wires.