You won't be able to affect the turbo or camshaft's characteristics with the ECU, I'm afraid. You can, using an EBC, switch between two maximum boost pressure settings. I thought about this a lot and I'm glad someone told me to just set the boost controller to whatever I consider the "high" setting and just leave it there. You'll have plenty of control over the boost with your right foot. ;)
It sounds like you want a low-mid size turbo (2560 probably) or a Rotrex. |
Originally Posted by kotomile
(Post 627818)
You won't be able to affect the turbo or camshaft's characteristics with the ECU, I'm afraid. You can, using an EBC, switch between two maximum boost pressure settings. I thought about this a lot and I'm glad someone told me to just set the boost controller to whatever I consider the "high" setting and just leave it there. You'll have plenty of control over the boost with your right foot. ;)
It sounds like you want a low-mid size turbo (2560 probably) or a Rotrex. I drive at 14psi on my 2560 and if I had an exh bigger than 2" I would have much faster spool. All it means is slowly releasing the throttle as you go up in revs to maintain linear acceleration. That will become as second nature as shifting gears gets. Even my mom can drive my car linearly and she was used to driving a 5sp v8 Explorer. I'd like to try out a Rotrex too but the 2560 is a good compromise as far as turbos go. |
Originally Posted by kotomile
(Post 627818)
You won't be able to affect the turbo or camshaft's characteristics with the ECU, I'm afraid. You can, using an EBC, switch between two maximum boost pressure settings. I thought about this a lot and I'm glad someone told me to just set the boost controller to whatever I consider the "high" setting and just leave it there. You'll have plenty of control over the boost with your right foot. ;)
It sounds like you want a low-mid size turbo (2560 probably) or a Rotrex. I wouldnt imagine going anything less than 3" exhaust lol. faster spool is faster spool! But i guess they can get pricey(or your to slammed to fit lol) I now the 2560 could put around between 190-250 right with being underwhelmed lol. |
Right, with cam position and/or grind, and the turbo itself (though how the turbo relates to your torque curve is more a spool aspect).
Go with a 3", definitely. I run the Enthuza (stainless) and I'm on the low side for around here. You'll drag it across a speed bump from time to time but it's a sturdy exhaust. I don't really understand your last statement and/or question. |
Hey, your the guy I was talking to on m.net. He asked the Tom humpers in the supercharger section what kit he should get lol. When are you gonna holler at BEGI and go over there? Also, your always welcome to make the trip down here and drive my car. Actually, I might be up around San Marcos at some point. Anyways, living in TX and having a turbo miata is pretty much the best thing you can accomplish with your life. I assure you, a 2560 won't make you want for more in traffic.
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Originally Posted by kotomile
(Post 627946)
Right, with cam position and/or grind, and the turbo itself (though how the turbo relates to your torque curve is more a spool aspect).
Go with a 3", definitely. I run the Enthuza (stainless) and I'm on the low side for around here. You'll drag it across a speed bump from time to time but it's a sturdy exhaust. I don't really understand your last statement and/or question.
Originally Posted by chicksdigmiatas
(Post 627976)
Hey, your the guy I was talking to on m.net. He asked the Tom humpers in the supercharger section what kit he should get lol. When are you gonna holler at BEGI and go over there? Also, your always welcome to make the trip down here and drive my car. Actually, I might be up around San Marcos at some point. Anyways, living in TX and having a turbo miata is pretty much the best thing you can accomplish with your life. I assure you, a 2560 won't make you want for more in traffic.
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Originally Posted by inferno94
(Post 627685)
I had the same setup (IHI equivalent journal turbo) on another car and it would make 1psi in neutral. Full boost (14psi) was availiable by 2700-2800rpm and starting at 1700rpm. I had a tough time not being at .5 psi on the highway while cruising.
You'd have to be going seriously fast for you to 'cruise' at a positive manifold pressure. |
I believe it on such a small turbo.
I was cruising in the SRT4 at 5 psi @ 65mph... but I was towing. |
With constraint i can usually keep to about -10 while cruising at 65-70. But as soon as i tip the right pedal it is boost. If i stomp it in 5th at 65 i usually get about 9-10 psi and illegal velocities.
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Originally Posted by saedrin
(Post 628210)
Wait wait wait..
You'd have to be going seriously fast for you to 'cruise' at a positive manifold pressure. Kotomile: Towing with a neon (turbo or not)? Really? I get harassed for towing with my xcab B3000 because "it can't handle a load safely". |
if you want a turbo that spools quick took a look out there for old dsm turbos. I had a 13g turbo (first generation automatic dsm turbo) and it could hit 10lbs of boost by 3000rpms. As far as the ecu thing goes, a lot of guys go with megasquirt around here. Thats what im running. And like stated before if you keep your foot out of the gas the car will kinda like a non turbod car lol.
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With it in that small amounts of boost does that kill gas mileage or no? I figured with the standalones it would already lean out the mixture.
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On my old car I got 33mpg in town and 30-35mpg highway but it typically was the same mpg or worse than city when on the highway. That was with an MBC set to 15psi.
My miata gets 30-33mpg (with a 6sp and 4.1 rear) and as high at 36mpg on a long highway trip with a bigger turbo (than the above described car), stock engine and exh. Porting the WG and having ebc that leaves boost at WG level unless you get on it help with unwanted boosting. You will be fine with a 2560 (again what I'm running now) people make 190 to ~300 (very rare) whp on these with great spool. Just remember your driving a revvy 4cyl not a more tourquey v6. You should only be lean when using a standalone if you tune it that way, I pass Ontario emissions with a MS1. |
Around town, and without being gentle with the go pedal I get 24-26 mpg in the Miata. On the highway, 30-32 depending how fast I'm going.
With the Jetta... |
Originally Posted by kidloco
(Post 628455)
With it in that small amounts of boost does that kill gas mileage or no? I figured with the standalones it would already lean out the mixture.
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ok guys the turbo size has NOTHING to do with psi when in vacuum. This is because of the throttle body, you are measuring air in the intake manifold not on the other side. If you are seing boost while cruising you should check out your car because something is wrong. Simply you have too much load to where you need boost to move your vehicle at 65-70 mph.
i'm assuming the gauge is wired in the manifold like it should be, not on the other side between the turbo and the throttle body. i got 28mph with the stock ecu hooked up and the waste gate disconnected and almost 32 mpg on the way back with the turbo hooked up and tuned and the car actually ran a tiny bit rich for cruising at 15-10in on my 300 miles trip (avg speed was 70mph all highway) |
Originally Posted by triple88a
(Post 628550)
ok guys the turbo size has NOTHING to do with psi when in vacuum. This is because of the throttle body, you are measuring air in the intake manifold not on the other side. If you are seing boost while cruising you should check out your car because something is wrong. Simply you have too much load to where you need boost to move your vehicle at 65-70 mph.
i'm assuming the gauge is wired in the manifold like it should be, not on the other side between the turbo and the throttle body. i got 28mph with the stock ecu hooked up and the waste gate disconnected and almost 32 mpg on the way back with the turbo hooked up and tuned and the car actually ran a tiny bit rich for cruising at 15-10in on my 300 miles trip (avg speed was 70mph all highway) |
Man im so thankful yall have treated me with so much hospitality, I do really appreciate it. My save for supercharger fund has switched gracefully to a new turbo kit in light of new discoveries.
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i'm running a 2554 hehe i know what sensitive is and you still need to press it to get in boost. Try the cruise control next time, it still should keep you at -10-15 cruising even at 70mph
Kidloco i'm glad you enjoyed your welcome, now bend over :P turbo kits are very fun but for our nbs are pain in the butt as we dont have any easy ways of getting fuel in that engine. I was thinking the same thing as you and here i am 4k later. I ended up running adaptronic standalone after scaring my self half to death with the xede piggy back. |
Its ok, he wants a megasquirt.
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