This is just not true. 21 PSI on a LARGER turbo Vs. the 16G will be WAY more efficient and much cooler charge of air, which is why you upgrade a turbo in the 1st place. The larger turbo can move MORE air efficiently so you make more power per PSI. You will probably make the same power at like 16PSi vs. the stock 16G at 21PSI and have LOWER Egt's.


Again if tuned properly Torque and WHP go up over a stock turbo just your power band is shifted.

 

Ok a lot of you don't seem to understand the way this all works. Every single evo I have seen has a big spike and then settles off. Guess what? That huge torque number you see is because of that spike in boost. His just goes to 21psi and stays there. No spike. Those numbers are about right for his turbo, the boost level, and the octane he was running. I bet he could extract a little more with cam gear tuning but that is about it. Maybe 15-20ft lbs.

What do you have your cam gear settings at?

 

Not always true. The larger turbo has to be in it's efficiency range.
I put a frank5 20G 60mm turbo on my 99 gsx and at 18psi it didn't even break 300whp. Then put a frank2 20G 46mm turbo at 18psi and made 350whp. Same mods just different turbos. Now at 28psi it would have been a different story.

 

Probably laggy and not tuned to hit at those numbers. I mean if it is a larger turbo and is more efficient it can move higher PSI at lower temps and not to mention more CFM's. Plus these turbos aren't to far off size. I believe the BIG 16G flows 550CFM's while this turbo flows closer to 800CFM's, like 780 but I am not sure.

 

must be nice

 

He is telling the truth but i think it will be way more than 20ft lbs. More like 50-80. U just have to tune till you hit that sweet spot. I also did notice how smooth your torque band is and on my car it does SPIKE like shyt and thats where i get about 20more ft lbs of torque

 

Nice torque curve, congrats on the setup.

 

The gt3076r is a 55lb/min or 795cfm turbo. I don't see how you can compare the big 16g which is a 38lb/min turbo to a 55lb/min turbo in spool or torque numbers. How can you actually make the statement that "these turbos are not far off in size."? They are way different in size. One is gasping for air while the other is just getting going. You might hit 400whp on the 16g but you need race gas, a lot of timing and a shyte load of boost while I can hit it with 20-22psi and pump gas.

 

The cam gears are at -3/-3 right now. I changed them on the dyno and we picked up 12whp on top but the torque stayed the same as 0/0. I will tweak them again next time I am on the dyno.

 

Thanks

 

I think that cam setting gives you more peak HP however moves the powerband too high. I would try something like +2, +2 or +2, -1. You may want to watch your timing though when you change to positive cam settings.

 

I might go out and try a few different settings and log the results.

 

Please don't get me wrong, I'm not trying to be critical or to be a hater. However, the "driveability is perfect" statement is hard to accept at face value..... Hey, maybe it's fine as far as you are concerned but I cannot swallow such a statement. Good grief, with that turbo and asssociated mods, your driveability cannot possibly be like a stock EVO.... I know a thing or two about the AEM EMS and moderately tuned EVOs. The one thing that is sacrificed right away is the driveability. I have yet to see an EVO with those types of mods (including a racing type clutch) to have driveability anywhere cclose to a stock EVO or one with a flash or XEDE.... I just have to wait and see with my own eyes, and drive it myself before I believe such stuff.....
Hey, I'm not doubting that your car makes good power, it's pretty cool, and you are happy with it. I even believe that for you, the driveability is good enough, but I defnitely think it's irresponsible to say it's "perfect". These types of statements can mislead ppl into thinking they can modify their cars with no negative consequences of any type. In my experience, that is just not so....

Peace out

 

My car starts fine evertime, it does not hunt afr's cruising down the freeway or when idling at a stoplight, it does not have a lopey idle from the 272* cams, it does not stall with the vta bov, it does not do any of the things that are associated with the karmen vortex sensor and modding cars so I can definitely say that my drivability is better now then when I was on stock ecu and turbo. My car use to have a nast lopey idle becuase of the cams and it tried to stall all the time and it would hunt afr's while idling and it would try and stall in between shifts. So I can say that the drivability on my aem is "PERFECT". God this forum has a bunch of haters on it.

P.S. Do you have or have you driven a car with aem ems on it?

 

Ditto, the AEM EMS driveability is perfect. Much better for me than before I had it. People need to realize that if you are not considering price it is the most superior engine management tuning device. Ive also heard very good things about the Motc and Autotronics ECU, but I have not seen them in action yet. But bottom line... AEM driveability is perfect. But it all depends on the tuner.

EDIT: BTW, strongbear, I dont think anyone is hating. I just silverevo8 is just trying to make sure you meant what you said as anyone has the right to do, but as I said I agree with strongbear 100%