I NEED Boost... Opinions puh-lease

[sleey0]

Originally Posted by pimp my yaris

I was already pricing out pistons rods and rings. I am thinking mabe next spring or summer. This looks like about the easiest engine pull possible. I would love to be pushing 15psi and get this thing really turning heads!

Do you think our cars could run ok stock @ 12psi with a not-too-agressive tune?

[why?]

Originally Posted by Focus_Sh1ft

Yeah, I'm really on the fence when it comes to tuning... I have only one tuning shop that is near me, and I'm really not crazy about the guy from the three conversations we've had. I wouldn't mind learning some tuning, but am worried that with my inexperience and lack of dyno that I may cause damage... Then again, I did just throw a turbocharger in my car with no mechanical expertise so..

I'm definitely leaning towards doing it myself... I'd like to think I get the basics of AFRs and the effect of adding/removing fuel. With a wideband, how hard could it be?

Dude, give Dezod a call, they are not too far, and he mentioned he be willing to give someone a deal.

Originally Posted by Dezod

Yes this unit works. I'd be willing to cut one user a deal and help with tuning to provide further proof to the community that it works. Serious people only please.....

Dezod's thread.

[Focus_Sh1ft]

Originally Posted by sleey0

Do you plan on changing out any internal engine components?

I honestly don't know yet. If I did it wouldn't be for awhile.

Also very doubtful that a good tune will let this engine run on 12 psi. There's really no proof that it can't, so you could be the guinea pig.

Anyways, I've decided I'll be doing my own tuning. I just ordered an AEM UEGO wideband and am going to do some more reading. cdydjded, I'll definitely be in touch... I'm hoping you can help me with the fuel trims for the most part, as that seems to be the most difficult.

Originally Posted by why?

Dude, give Dezod a call, they are not too far, and he mentioned he be willing to give someone a deal.

Yeah, exactly what I thought, but I'm using an FIC. I have to admit, it is slightly tempting to take the deal and get some REAL engine management...

[sleey0]

The jimze sc kit puts out 1 bar, as far as i can tell.

Therefore our cars should be ok at 12 psi. As long as the tune isnt crazy aggressive and richens out the afr.

[Nexus1155]

The jimze sc kit puts out 1 bar, as far as i can tell.

Therefore our cars should be ok at 12 psi. As long as the tune isnt crazy aggressive and richens out the afr.

Stop your reasoning right there. 12psi on one thing is not 12psi on another depending on how much air it pumps out. A tune cannot be "aggressive or subtle" The fuel is tuned to 11.* AFR and the ignition is dialed in to where there is no knock.

In terms of aggresiveness it relates to how much pressure you are pumping in there. Say on this engine 6psi on his turbo kit is streetable. you can get away with 8psi on a good tune, but on these internals and that turbo, you would be wise to not try to push more than that.

[sleey0]

Originally Posted by Nexus1155

Stop your reasoning right there. 12psi on one thing is not 12psi on another depending on how much air it pumps out. A tune cannot be "aggressive or subtle" The fuel is tuned to 11.* AFR and the ignition is dialed in to where there is no knock.

In terms of aggresiveness it relates to how much pressure you are pumping in there. Say on this engine 6psi on his turbo kit is streetable. you can get away with 8psi on a good tune, but on these internals and that turbo, you would be wise to not try to push more than that.

I see, and thank you. I shouldn't be comparing psi from the turbo to a sc.

See, you guys can hit me with the noob hammer once in a while. lol

Just wondering about that jimze blower and how much more it will put out and stress our engines.

[Nexus1155]

No, its not that. I just don't want to see anyone blowing up their engines from thinking that. If you didn't know, somewhere down the line it may have happened to you if you didn't have the proper info. I'd have to see the flow charts for the supercharger to compare to anything, but its hard to judge without testing it out and seeing how much you can push it.

I'm still looking around for a cheap G60 supercharger in good condition or an M45, or a GT25. I keep losing the damn ebay auctions

[Focus_Sh1ft]

Yeah don't feel bad, you gotta learn somehow... A couple months ago I didn't even know what a turbocharger or surpercharger was.

Interesting aside, and a testament to the learning power of our ECUs. For the first week and a half my narrowband signal has averaged about .22. As of the last couple days, it has actually risen to average out at about .38. Not too informative, but clearly the ECU has gotten better at running stoich conditions, even with forced induction in the mix. Tuning is obviously still needed though.

[sleey0]

So you have no fuel management right now aside from the stock ecu and only have a narrowband?

Even I know that is risky! Lol

[Focus_Sh1ft]

Yep

I was originally expecting to get tuned before doing this much driving, but complications extended the install and then school started so I NEED my car. Not to mention my potential tuner gave off vibes of being a total ass. I rarely push 5 psi though, so I'm definitely trying to play it safe. There will be plenty of time to blow people away once tuning is done.

[sleey0]

All i know is that it must be extremely difficult to have a turbo and not drive like u have one.

I dont think i could do it lol. More power to ya!

I must say i have really enjoyed this thread and i wish u nothing but the best!

Oh, and once you learn the FIC, you will be getting pm's from me, bro! I am planning on using it with my sc setup in the next couple of months.

[why?]

Originally Posted by sleey0

I see, and thank you. I shouldn't be comparing psi from the turbo to a sc.

See, you guys can hit me with the noob hammer once in a while. lol

Just wondering about that jimze blower and how much more it will put out and stress our engines.

Just want to make sure this is 100% clear. You can't even compare boost numbers from different turbo's, because different a/r's, compressor sizes, etc, can all make it different.

[sleey0]

Yes, I understand.

My question was supposed to be in general, ie "can our engines run @ 12psi safely without building the motor".

That was my question. :D

[cali yaris]

^ probably not for very long.

[Nexus1155]

:brokenhe art:

Look at it this way, whats the power output of a GT25 @ 12psi compared to a GT35. The difference is astronomical.

[sleey0]

Nevermind....

[Nexus1155]

nononono be lucky i am not tamago and i won't yell at you and i'll try not to go too in depth. I am going to show you what I mean. You are not allowed to build a turbo kit until you understand this. Basic I am sure you know, air + fuel + spark makes combustion and power. Doing something to allow air to flow into the engine more = more air+more fuel+spark = more power. Now if you take a turbo/supercharger and start forcing more air into the engine you will get alot more power.

http://www.atpturbo.com/root/maps/im...8rsturbine.gif

Pretty much identical turbo other than the area/radius of the housings. If you follow any pressure ratio on that given map you will see the larger housing will always be pushing more air through the engine.

Depending on if you want it for low end boost or more high end, something even in the same family of turbos can be dangerous to your engine if you do not size it properly even a GT25 and you end up cranking up the pressure one day by a little bit your engine might blow. Even though these engines ae only like $50 a pop.

[why?]

well maybe $500 a pop, but still dirt cheap engine wise.