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small16g ported/clipped vs. evo3 16g

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nazthug

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Discussion starter · #1 ·
realistically, whats the better street setup?

I hear the evo creeps alot.

I can either get a ported/clipped small 16g or a ported evo3 16g

which one would be better?

i am runing through a 3" cat, 2.5" downpipe that goes to 3"
 
#2 ·
I have an EVO III and have no boost creep. It can be solved. Evo has the biggest compressor wheel out of all the 16G series. The small 16G has a better map against the big 16G and the Evo has a better map than the big 16G. These are things that I got from tslking to vendors and reading up. I would think it all depends on what you want as far as performance. My opinion (As you can see from my sig) is EVO III 16G. And to solve the boost creep on the EVO you don't need the flapper mod. (I didn't do it and have 0 boost creep)
 
#5 ·
If you plan on running less then 20psi of boost the small 16G has a small amount of more airflow. At 15psi a small 16G is rated @520cfm, a Big 16G is rated @ only 500cfm at the same boost level. I haven't seen a comp map on an EVO 16G, but I would think it would be similar to the standard Big 16G. Although the clip and porting could make your spool(small 16G) slightly slower than an unpoerted or clipped EVO 16G.
 
#6 ·
4SFED4 said:
If you plan on running less then 20psi of boost the small 16G has a small amount of more airflow. At 15psi a small 16G is rated @520cfm, a Big 16G is rated @ only 500cfm at the same boost level. I haven't seen a comp map on an EVO 16G, but I would think it would be similar to the standard Big 16G. Although the clip and porting could make your spool(small 16G) slightly slower than an unpoerted or clipped EVO 16G.
Click to expand...
uuuhhhh what??? i think you're confused..at least i hope you are :rolleyes: small 16g 505cfm@15psi., big 16g 550cfm@15psi. the big has more airflow, hence the name. at lower boost levels, the small is more efficient which i guess is what your getting at. however, the bigger wheel flows more air at any boost level. i have a small 16g and am very happy with it. a ported/clipped small 16g will flow less than an evo16g and will probably have just as much lag. i would go evo16g and port the hell out of the stock O2 housing or go tubular if you have creep issues.
 
#7 ·
I didn't notice a difference in lag between my Evo 16G and my small 16G. The acceleration difference was quite noticable, though! :)
 
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#9 ·
i have a big 16 and right now im lovin it, i wish i had a new evo 3 but i got the b16 for a bargain that i cant complain. at 20 psi on pump it pulls like a raped ape. my buddy with a gst has an evo 16g and he put down 320-330(dont remember exactly) to the wheels on 20 psi with race gas(he could have turned it up, not sure why he didnt). but crank it to 24 psi and thatl get some impressive numbers.

if you have any issues with boost creep i recommend a victory dumped 02 with a good electronic boost controller like a profec b. i have 0 boost creep, when its cold outside it creeps a bit but then i just change the balance setting on the profec and it holds rock solid.
 
#13 ·
jmakado said:
uuuhhhh what??? i think you're confused..at least i hope you are :rolleyes: small 16g 505cfm@15psi., big 16g 550cfm@15psi. the big has more airflow, hence the name. at lower boost levels, the small is more efficient which i guess is what your getting at. however, the bigger wheel flows more air at any boost level. i have a small 16g and am very happy with it.
Click to expand...
Better look at the compressor maps. Taboo's site has the maps ffor both Big and small 16G but you would have to do the conversion math. www.stealth316.com has maps that are already converted and you have to do is figure your pressure ratio. 15psi has a 2.0 pressure ratio at sealevel. On the compressor map the small 16G has 520cfm @ a 2.0 ratio, the Big 16G only has 512cfm. On the other hand at a 2.6 pressure ratio(24psi) the small 16G drops to 505cfm and the Big 16G rises to 550cfm.
You don't have to take my word for it, I gave two sources of info so go check it out.
Just don't respond with any questions on conversion formulas to read the compressor maps, that belongs in the HELP Forum ;)
 
#14 ·
small 16G

I like my unclipped small 16G for its top end, but it's a little laggy [fullboost at 3500]. My Mirage has made 3 runs over 118 MPH, the best being 12.24 at 118.75 at E-Town at this years shootout. Some have said that the small is under rated, I agree.
 
#15 ·
i personally would never buy a clipped turbo. if you want more power, buy a bigger turbo, don't hack a smaller one. with evo 16g's as cheap as they are now, i don't see why this is even a discussion. evo all the way.


btw, who cares about airflow at 15 lbs? if you are going with a bigger turbo, you need to get supporting mods as well. 20 psi on pump gas should be no problem with the right setup (unless you have to deal with 91 octane). buying a bigger turbo to run 15 lbs. just seems dumb to me.
 
#16 ·
I agree, but not everybody wants to press the threshold with pump gas. I see more and more people more interested on what they can "safely" do with pump gas because they don't want to spend $8.50/gal for C16. Personally give me the blue go-go juice with timing and lots of boost, damn the cost.
 
#17 ·
I just love the Evo III. I had the T-28 killer (for 3 weeks) and the Evo is an improvement and the spoolup on mine is 3100 for 15 rock solid boost. I don't see it any different in spoolup. It spools up fast. If I mash the pedal at 4000 instant boost. I did my own porting and like RippinGSX said, porting it correctly stops all boost creep. I went beyond and polished the turbine. I really like also the fact that when she spools up its louder than my old T-25 and the T-28Killer. Very clear "SHHHHHHHHHH" even with the windows closed.
 
#19 ·
4SFED4 said:
Better look at the compressor maps. Taboo's site has the maps ffor both Big and small 16G but you would have to do the conversion math. www.stealth316.com has maps that are already converted and you have to do is figure your pressure ratio. 15psi has a 2.0 pressure ratio at sealevel. On the compressor map the small 16G has 520cfm @ a 2.0 ratio, the Big 16G only has 512cfm. On the other hand at a 2.6 pressure ratio(24psi) the small 16G drops to 505cfm and the Big 16G rises to 550cfm.
You don't have to take my word for it, I gave two sources of info so go check it out.
Just don't respond with any questions on conversion formulas to read the compressor maps, that belongs in the HELP Forum ;)
Click to expand...
actually, you might want to read the maps again. they are meant to determine the efficiency of a turbo at a given pressure using the flow (cfm, kg/sec. etc.) of the engine. not to show a max cfm rating of a turbo. that's why mitsubishi rates the small 16g at 505cfm@15psi. and the big 16g at 550cfm.@15psi. and not at 24psi. as you stated. and like i said before, i'm not saying which is better, i bought the small 16g because of the map! but even RRE states on their website that the big 16g will flow more than the small 16g at ANY boost because of the bigger wheel. so unless you know more than the mitsu. engineers or RRE, which i definately don't, then i would trust their info on the turbo's they designed, build and sell.:)
 
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