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.

I say 2 psi.

0 psi. + or - 1 psi

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.

I hate to say it but I cannot even read this guys post.

i second that :squint:

what is Pee-ass-eye ?

:lol: tough crowd :lol:

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.

the forum is very helpful, as long as you don't ask questions with no answers (like this one) or really really stupid questions
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

If your questions was legible, noone would have said a negative word.

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.

there are no stupid questions, just closed minds.

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...

the problem, and reason you get responsesas you have, is that these kind of posts are "BS to sift through" as much as our replies are. the idea is hopefully one day newcomers will see and learn quick enough that they dont start 25 threads like this in their first month as members. cause when that happens regularly, over time there will be a LOT of good important threads and data that become difficult to find at all due to all the stupid shit threads like this one:

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.




That won't work for a number of reasons.

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.

Least of all assuming such a setup were possible you wouldn't be able to flow enough air to make any kind of power. The greddy turbo kit has been documented to produce enough flow to yield about 240 - 260 whp but that's also running at 6psi of boost.

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.

Afraid not. There are plenty of threads in the major horsepower section with various types of turbo information. You would be able to see that no one running any kind of FI uses the stock tune.

That usually results in a motor replacement.

no,

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:

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.