turbo upgrade

ok so a stock 1g has a 13g or 14b (autotrans)

what if the turbo is upgraded to a larger one, evo III 16G for example, would the fuel economy change at all, since there is less low end power but more power in higher rpms?

besides intake, exhaust, boost gauge & controller and fuel pump, would any modifications have to be done in order for this turbo to run without any problems?

how much power do you think the engine will have?

your concept of turbo upgrading is wrong. Upgrading just the turbo does nothing, you probably won't be any faster. You need to turn up the boost, to do that you need fuel and engine management. You'll actually get better gas mileage if you stay off the turbo, my highway mpg went way up. you need many more supporting mods, check out the dsmtuners.com upgrade path, they have almost everything

the a/ts have 13gs on them, you could run an evo III no problem if your at the stock boost levels. Your list is good but you will also need injectors to complete the setup

is this good enough for tuning?

http://www.dsmparts.com/customer/home.php?cat=110

&

that EPROM thing...

Safc's work fine with 550 to 650 injectors at the most.

i mean i still want the 1g to be my daily driver so i dont want to have too many mods, since they increase the chances of things going wrong

what are some problems that i can run into after getting this tuning thing, 250 fp, and evo iii?

since the evo iii is bigger than the 13g, whats the highest, safest boost i can run with this low amount of mods, and not harming anything in the car?

Upgrading just the turbo does nothing, you probably won't be any faster. You need to turn up the boost

I'm not sure if I understood your post right... are you implying that running a larger turbo versus a smaller one at the same boost levels will not yield significant power gains, considering a stock air/fuel set-up?

yeah, i was told that just upgrading the turbo was not going to make my car any faster, the boost would has to be increased and there would have to be some tuning

Just turning up the boost will make an instant difference, you don't really need to hardcore tune until you're putting down some decent numbers and just want to get that much more out of it. I don't know what you're thinking for intake and exhaust mods, but a k&n filter with hard pipes will do and a 3" exhaust system. A Walboro 190 with a re-wire mod and manual boost-controller will do you just fine.

I'm not sure if I understood your post right... are you implying that running a larger turbo versus a smaller one at the same boost levels will not yield significant power gains, considering a stock air/fuel set-up?

yep, putting a 16g in a car running stock boost won't make much of a difference. Boost won't fall off quite as early in a 2g, but they will still fall off due to cams.

anyone who runs a high boosted 16g can tell you that the turbo doesn't really come alive til around 18psi orso

yep, putting a 16g in a car running stock boost won't make much of a difference. Boost won't fall off quite as early in a 2g, but they will still fall off due to cams.

anyone who runs a high boosted 16g can tell you that the turbo doesn't really come alive til around 18psi orso

So, you are saying that the evo3 16g won't really pull like a mofo until 18psi? Would 18psi be doable with the normal supporting mods and like a 190 pump and 550's?

So, you are saying that the evo3 16g won't really pull like a mofo until 18psi? Would 18psi be doable with the normal supporting mods and like a 190 pump and 550's?

with the supporting mods 18psi is possible. Honestly, around15 psi or so, the evoiii just doesn't pull that strong. Around 18psi it pulls hard, around 20+ it pulls like a mofo

would a s16g(ported) be about the same?

would a s16g(ported) be about the same?

yep, not from personal experience though, but the general consensus is that all the 16g's behave very similarly.

not to jack the thread but what do you think I can run(boost wise) and be safe with the stock pump?

Personally, with the stock pump I wouldn't run more than stock boost. Why risk it? Besides, a walbro 190 is 95 bucks shipped from extremepsi.com, has more fuel than you'll need with that turbo, and takes about half an hour to install. As long as you have a good bov (not on your sig) then you can boost up to around 20psi if you wanted with a fuel pump. Just use your logger to check your timing and knock and you'll know if you're running lean.

type-s, I think it still says it down there, just have to look closer:wink:

Just to give people an idea. I run in 16/17 psi range on a evo 3 gt(ported/34mm w.g.). No fmic and smaller exhaust for now. My car pulls much better than stock. If I had to guess.. probably few more ponies. Maybe a few 1/10's quicker(but I really dont know). One thing I noticed though is my car felt so much smoother and the turbo used to act up a bit I guess from being on there for 15 yr's(it spools a little later and has better top end power now compared to my tiny 13g). Either way if you keep it around stock boost, the car might feel like a better driving car if your turbo you have now is iffy.. like in my case.

yep, putting a 16g in a car running stock boost won't make much of a difference. Boost won't fall off quite as early in a 2g, but they will still fall off due to cams.

anyone who runs a high boosted 16g can tell you that the turbo doesn't really come alive til around 18psi orso

I'm not sure I agree with you. Both, from personal experience and reading reviews.

It is all about air-flow, and at the same boost, a larger turbo will flow more air than a smaller one. Yes, that is true that you may not be squeezing every ounce of potential out of your larger turbo if you have yet to turned up the boost, but you will still be faster than if you were running a smaller tubo. Before I put the EBC in, my car was pulling like crazy with the 16G on stock boost, a notable difference as compared to the T-25 before that, also on stock boost. True, though my motor is cammed with slightly high compression, the main difference in power is the turbocharger itself. Of course, I realize that the absence of air/fuel upgrades limits the turbo's potential, but the car is much, much faster at 16 psi on the 16G than 16psi on the T-25.


:2cents:

Airflow is huge, yes, but the 16g really isn't all that much bigger. Something like a 60-1 at 15psi will murder a T25 at 15psi, but the difference in T25 vs. 16g isn't nearly as dramatic.

compression and cams make the difference. The car "feels" faster because the 16g can keep boost with your cams. Stock turbo, stock or aftermarket cams, would lose boost anywhere past 5k rpm. Get some air/fuel (I have no idea why you chose these mods last? ), turn the boost to 20psi, and you'll see what I mean. Night / day difference from 15psi. Plus any 16g creeps like a mofo...