I have a 2005 evo with these mods, 3" exhaust, hard pipe intake tubing, 1000cc injectors, 255 pump, arp head studs, manual boost controller and the rest is basically stock. I am looking to make approx 400-450 hp and still maintain stock drivability. I was hoping to do it with just a turbo and without cams and I was looking at the MAP EF3 turbo. What kind of numbers can do you guys think I will make with just the turbo and no cams on about 28psi.
Thanks

 

I will agree with you guys. Although this is the x section I still have a Map turbo. Nice thing is they offer to upgrade your existing turbo and I am sure if you pmed Chris about it he can give you more details about it. I know I love my turbo and I am sure I will love it even more once I get my motor built.

 

seems like everyone's got it wrong

 

EF3 is a great turbo...but you're going to want to add at least an intercooler to that parts list too.

 

FP or EF is your best bet just like everyone else said.

 

What do you guys think about the GTX3071r garrett turbo. I have my list down to 3 turbos, the GTX3071r, Map Ef3 and FP red.

 

Borg Warner for the win... Not gonna bash stock frame turbos, just not a fan.. They are good for a while, but then they go up in smoke, and that's that... "IF" I had to recommend one, would say the EF series.. good luck

 

I Love my Dual BB Twin Scroll GTX3071r...
https://www.evolutionm.net/forums/ev...t-2011-mr.html

Both the FP Red and 3071 are BB units and about $500 more than a EF3...So if money is tight I'd get the EF3..

If you want to stick with the widely used and written about BB unit go with the Red

If you want to be a trendsetter go for the Garrett.. The older version of the turbo had poor spool and iffy power...I beleive Garrett has got the new GTX3071 in a great sweet spot...

I can't wait for this Spring when I can build the motor to handle all the power we feel we can extract on 93 Pump and 106 Sunoco

Cheers,
HAZMAT

 

Yeah I try to find more post of people with the GTX3071r, how hard dose it pull on you car with the MR model, when dose full boost kick in and how long dose it hold before it falls off.

 

I always find myself looking at that turbo more than the others.

 

Try a slightly different approach and instead of looking at all out power figure out what rpm you want your power band to be within....that will determine the turbo and the out put-- green to red to black is ahuge difference in response, lag, power and power band..thwn match the turbo to your needs..

 

For what it's worth I'm on a journal bearing 84mm FP Red. This turbo has never seen under 25 psi from the day I've had it and it's got well over 25k miles on her with NO shaft play. I can't speak for the BB versions but my "old school" red has done nothing but outperformed my expectations and then some. I absolutely love this turbo for it's power as well as it's drivability.

In my opinion, with something as crucial as a turbo, you get what you pay for and the risk will usually reap such rewards. I am not saying anything bad about MAP turbos as I think they are a wonderful company with excellent products and customer service; but I'm just basing off of my own personal experience with FP. I think with either MAP or FP you won't be unsatisfied.

 

I want boost to hold to about 7,000 maybe 7500 rpm and full boost at 3500 to 3800. I would like to achive 430 to 450 hp on 93oct.

 

I know the 4b11 is different but I get full spool by 4k and it holds up to 7500 making 453hp dynojet.