max PSI on stock ECU?
Anyone know where to find out what kind of PSI can be pushed with a small turbo with the stock computer, injectors, fuel pump and MAF?
I just figured a turbo would be a good muffler and a possible 50hp +- or so increase would be a plus, if it is even possible. Compared to these $500-$1000 exhaust systmes out there. They seem to be all show and no go. I would like to see a turbo set up like the new vettes have and use the turbo where the muffler is and route the intake charge to a front intercooler and get more power from the cool charge with low PSI. Sounds good on paper ;) |
You're all over the place here. You ask how much PSI the stock ECU can handle, and later you go on to say you're interested in a low PSI system?
First of all, PSI by itself is meaningless--the amount of air a FI system flows is what is important, and pressure alone can't tell you that. Now that that's out of the way, with stock injectors and fuel pump you have enough fuel to reach 300whp safely and relatively easily. Nobody has reached the limits of what the stock MAF system and PCM are capable of handling yet, so no worries there. If you're interested in a remote turbo setup, search for Rotorocks. Regardless of what you decide, expect to pay upwards of $5000 for a turbo kit, engine management, tuning, and other peripherals (cooling system, gauges, boost controller). That's a conservative estimate unless you know a lot about FI, and can design and machine your own system and tune it. |
the new Vettes have an SC. That is assuming you are talking about the ZR-1. It is eaton's latest generation of roots blower.
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I say 2 psi.
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0 psi. + or - 1 psi
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I assume with the stock computer, he meant a stock computer retuned with AP, Hymee, EFIDude, etc. If you are talking about using the stock tune, I wouldn't run any boost at all. I would think that would be a perfect recipe for a ruined engine.
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I hate to say it but I cannot even read this guys post.
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Originally Posted by mysql
(Post 2642779)
I say 2 psi.
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what is Pee-ass-eye ?
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:lol: tough crowd :lol:
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its a tough forum.
very negative and not much help at times, you must dig through a lot of BS to get down to the nity grity. Now since thats out of the way ;) I was talking about (which was answered with 0-2 psi) just hooking a turbo etc. with stock comp and everything else. Bare Bones turbo system. which seems it is not a possibility from these responses. MDW1000: I wasnt talking about a ZR1, I saw a kit before that replaced the mufflers on a vette with a turbo set up in the rear. |
Originally Posted by 813KR$
(Post 2643334)
its a tough forum.
very negative and not much help at times, you must dig through a lot of BS to get down to the nity grity. Now since thats out of the way ;) I was talking about (which was answered with 0-2 psi) just hooking a turbo etc. with stock comp and everything else. Bare Bones turbo system. which seems it is not a possibility from these responses. your question was answered in the first response. psi is meaningless alone. |
like i said you have to sift through the bs . . .
thanks for adding more bs to sift through. if there are no answers there should be no responses. How the fck is anyone supposed to push limits with thoughts and experience if the majority of reply's want to be non constructive opinions? Think out of the box! |
so many closed minds, its embarassing you are part of my rotary community. Now Im starting to understand why people say Rx-8 owners are different rotary people.
Im not grouping everyone on this forum or even thread, but Im sure if the shoe fits |
Originally Posted by 813KR$
(Post 2643376)
so many closed minds, its embarassing you are part of my rotary community.
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I can't say that I've had many people make fun of me here on this forum, even when I was a noob. However if I ask something stupid, I expect some wise ass remarks. That's why this thread is the way it is.
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there are no stupid questions, just closed minds.
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That deserves a demotivator!
http://images.despair.com/products/d...uelessness.jpg I think you'll find that while there are a lot of knowledgeable people on this forum, that they are very intolerant of poorly thought out posts, or questions that could have been answered in under 10 minutes with a little research. This is mainly because there are so many posts that fall into these categories that it gets tiring. I'm all for "thinking outside the box," and being "open minded," but I've heard far too many people use those phrases to justify blatant ignorance and theories with no basis whatsoever. A hypothetical example: ForumN00b: hay i think its good idea to add water to ur gasoline i hear u can get 30mpg! ForumVeteran: That's the dumbest thing I've ever heard of, you're a moron, go away. ForumN00b: god u guyes need 2 think outside the box! a buddy told me this works im just tryin to get better mpgs and save sum $$ Not that your post was quite that stupid, but you get my point. |
currently there is no kit that runs off the stock ecu flash.....i know that the stock ecu tunes 11's and 12's in afr in upper rpms so im sure you could run some boost but not much.....im no fi specialist im just trying to give you a plausible answer perhaps you should ask mazda maniac(jeff) he is very well inclined with fi applications....
and to other vet forum members im sure he asked this b/c other cars can run sc and turbo kits off there stock tune and get 60+ hp...like the 350z which has a s/c kit that works out of the box with no need to tune... |
Originally Posted by 813KR$
(Post 2643372)
like i said you have to sift through the bs . . .
thanks for adding more bs to sift through. |
All your questions could have been answered if you just searched for 5 minuets on this forum. In fact, I think most of your questions have already been asked sometime within 36 hours of you just asking them, and in fact on the same page as this one.
This is why you get BS responses- BS in, BS out.
Originally Posted by chancejat
(Post 2643574)
currently there is no kit that runs off the stock ecu flash.....i know that the stock ecu tunes 11's and 12's in afr in upper rpms so im sure you could run some boost but not much.....im no fi specialist im just trying to give you a plausible answer......
First off, a turbo adds total airflow. What happens when you add more air not more fuel? You guessed it, a lean condition. So even if the stock tune hits high 11's and 12's in some areas, once you add more airflow to the mix, it quickly leans out. And if that wasn't enough, the stock PCM has no way to deal with the added airflow, since you will quickly max out your grams per second on the MAF and your calculated load values. This also ignores the fact that your ignition timing would be completely wrong and far too advanced in most cases. |
Originally Posted by chickenwafer
(Post 2643755)
That won't work for a number of reasons. Honestly it sounds like the OP just wants the turbo for show because even at slight boost the car won't make much more power than it would N/A. very negative and not much help at times, you must dig through a lot of BS to get down to the nity grity. Think out of the box! |
Originally Posted by 813KR$
(Post 2643415)
there are no stupid questions, just closed minds.
you are really the king of stupid questions!. hows that radiator working out for you? the stock ecu maxs out with na.. duh.. adf, beers :beer: |
Originally Posted by 813KR$
(Post 2643334)
I was talking about (which was answered with 0-2 psi) just hooking a turbo etc. with stock comp and everything else. Bare Bones turbo system.
which seems it is not a possibility from these responses. I still think you could do 2psi in theory... stock afr's are in the 11's and all the fuel and ignition maps are scaled to go up to 125% load |
Why spend all that money to add a turbo and not get the ecu tuned? You are risking the engine and you aren't maximizing the use of the turbo. The additional cost is minimal.
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Originally Posted by 813KR$
(Post 2643334)
MDW1000: I wasnt talking about a ZR1, I saw a kit before that replaced the mufflers on a vette with a turbo set up in the rear. Your low boost idea would be interesting to try if you followed Al's advice on getting the engine tuned. Try say 2 psi, but with an FI tune. It would be interesting to find out if the 2 psi power gain overcame the loss due to the additional back pressure from the turbo. I'm don't know enough to know that off the top of my head. But on this car I definintely wouldn't try it without changing the engine management. Either with a reflash or with the IntX. Rotorocks has done a remote turbo setup for his car. I think he's lost some engines, but I think he was running a lot more boost as well. |
considering that it can't even handle 65shot wet nitrous.......
I'd say...........1 PSI? |
PSI doesn't matter. It's airflow people.
And lets say you could even get away with "2psi" on the stock ECU, how the hell would you regulate your turbo to not make any more boost? You would need a big ass external wastegate, like a TiAL 60mm, if not twin 48mm w/gs. The cost to do this would be staggering, and to modify the PCM to actually let you make real power would only be $700 bucks. |
perhaps an electric turbo running 1 psi of boost would work with stock tune - perhaps .....
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I just figured it would be a different subject to talk about, not going to try. I have a friend that has an old celica with a turbo setup and he doesnt have much done to it, just was seeing if any ideas were out there. basically turbo, waste gate, intercooler and guages? quite simple setup. dont quote me Im not a FI tech, obviously!
whats a remote turbo set up? a turbo not in the conventional place? |
haha elec turbo, funny stuff . . .
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Originally Posted by 813KR$
(Post 2645295)
I just figured it would be a different subject to talk about, not going to try. I have a friend that has an old celica with a turbo setup and he doesnt have much done to it, just was seeing if any ideas were out there. basically turbo, waste gate, intercooler and guages? quite simple setup. dont quote me Im not a FI tech, obviously!
whats a remote turbo set up? a turbo not in the conventional place? A remote turbo usually refers to the turbocharger being placed further away from the exhaust ports of the motor, usually in the muffler location. |
search blitz sc.
beers :beer: |
I wonder if people can use Blitz SC with another EMS, say, AP, or EMU, or F-Con V-Pro.
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Originally Posted by 813KR$
(Post 2645295)
whats a remote turbo set up? a turbo not in the conventional place?
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Originally Posted by nycgps
(Post 2645937)
I wonder if people can use Blitz SC with another EMS, say, AP, or EMU, or F-Con V-Pro.
The only issue with the AP is MAF sensitivity. As long as you get a pre-compression 6" long straight section for the MAF, you're golden. |
Originally Posted by 813KR$
(Post 2645297)
haha elec turbo, funny stuff . . .
http://www.electricsupercharger.net/ |
like I previously said, haha good one on the elec "supercharger"
I checked out your link and really seems like a scam. the forum sounds fake and I viewed that video which claims to push 6 psi, the freaking engine is off! I could blow 6 psi with this hot air Im blowing as I speak. I want to see 6psi at 7000 rpms with the throttle wide open. It sounded quite weak also. Do you have one? do you seriously endorse this product? It looks like a joke to me, but that is my opinion with a quick review of your link? It would really be cool if something like that worked, just doesnt seem feasble . . . |
well I'll see your haha and raise you a hehe !!!!
No I don't have one and I don't endorse the product . I didn't even have a good search , this one I just googled . But for you to say it can't work is laughable . For a small power gain this can and has worked for people with piston engines . The electric SCs are ok on small displacement engines that don't require a lot of air - the problem being you need to seriously upgrade your electrics if you want boost for any length of time . This one looks like a more serious atempt .... http://www.turbomagazine.com/tech/04...ger/index.html |
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