I have a M2 Aluminum intake W/hardpipes, Efini Y-pipe, ATR 3" downpipe, stock cat, and cat-back. I boost a pattern of 12-10-12. I searched the forum, but couldn't find an exact answer. The boost it very smooth, consistent and doesn't spike or flutter. My question is: Is this normal for the mods I have? Or is this high? Also could this be too much for the stock fuel map? A/F gauge says rich under WOT, but I hear they aren't that accurate.. Thanks!

 

I tihnk thas about normal for the mods you have, althoug I think 12 PSI is pushing it on the stock ECU and intercooler. I suggest gettinga boost controller and turning it down a bit.

 

Ok. Thanks for the info!

 

Take what Zoomspeed VERY seriously. The stock ecu cannot handle 12psi. Until you can upgrade your computer you need to dial back the boost. You can use simple Home Depot bleeder valves if you like, but please do this. Save yourself a rebuild. And I know that you have probably been running this way for a while, and you think I'm being overly cautious (or paranoid if you like), and since you haven't blown-up yet you probably won't. Not true. It just takes a few degrees ambient temperature drop to pop the motor. Don't gamble with $3500, just turn down the boost.

 

yeah, if your low the $$ just make a home depot style valve for ~$20. A new engine isn't worth and extra 15HP.

 

Actually you would be safe running up to about 13. Idid it for over a year with out any problems.Lots of you guys get itchy with this but Im telling you it's not a big deal to run 12-13 psi on the stock ecu.If you were at 14-15 I would just get a reprogrammed ecu for safetys sake.You guys are way too cautious for me.If I blow my **** then I'm all that much smarter for it.You dont learn without breaking a few eggs.I'd rather know the cars limits than be f-ing guessing all the time.

P.S. obviously I'm not scared to spend my cake on rebuild kits. So dont slam me for bieng stupid.It's only stupid if you cant afford it!

 

I belive that varies form car to car. There have been poepl running full exhaust+ intake, etc on a stock ECU w/ no problems (although not many), then they are people that try that adn their engines go pop.

lol. "you don't learn w/o breaking a few eggs." popping an engine is more like steam rolling the whole hen house

But hell, If you have the dig-its to just say "I think I'll get a new engine today" send some of the $$ over this way. PM me and I'll send you my address. Personal check is ok with me.

 

Would you shoot yourself in the head to test the structural integrity of your skull? Do you have any idea how little sense you make? If that is your philosophy, fine. But don't preach uneducated info to other more impressionable people.

 

It's not uneducated you Donk like I said I ran my set up this way for over a year w/out any problems.And my skull and my engine are two entirely different things so thats a bad comparison.Where is your education from anyway? What makes you the expert? Because my experience is different than yours I guess it's the wrong one right? And IM just voicing my opinion its a forunm where I thought people would be iterested in several points of view. NO SOUP FOR YOU!

 

I would be more than happy to provide you with the sites that show the limits of the factory ecu. I ran with a full intake and exhaust and the factory ecu for about 6 months myself without any problems, save hitting the fuel cut a few times. You can live with a few 12 or 13 psi spikes but you cannot run that much boost for long.

Differing opinions is why we have forums and bulletin boards, and I would never contradict something that is qualitative. This however, is not a qualitative discussion. We are talking about fact. And the fact is, what you are suggesting is dangerous. Why would you want to potentially contribute to other owners blowing their motors? Are you going to split the rebuild costs with them when they follow your advice? Probably not.

I respect yours and everyone's opinions when they don't endanger or potentially cause expensive problems for other people.

 

Im assuming he is a free thinker and can make up his own mind on what to do with his car.Im making a statement based on my experiences with my car. IT is a FACT that my **** was fine 12-13psi on stock ecu for over a year. Stop being such a drama queen. Nobody asked you to comment on my post anyhow with smartass comments like would you shoot yourself to test skull integrity. In person a comment like that would have landed you on your ***. All you had to say was that you disagree and your point would have been made.

 

Suggesting you shoot yourself to test your skull's integrity is tantamount to what you were suggesting. You'd rather blow your motor and know 13psi is too much, than take the advice of others and liimit yourself to 12psi. That is ignorant. And you don't know for a fact that you have been running 12-13psi for a year. You believe you have been running that based on your boost gauge. How do you know your boost gauge is accurate? You have no empirical evidence to backup anything you're saying. I can, however, show you that the factory ecu cannot provide the necessary fuel above and beyond what it is programmed for.

I just hope some newbie doesn't take your advice and end up with a $4000 bill for a rebuild. That would be a damned shame.

 

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It's never long before someone lacking intelligence resorts to name-calling.

 

.Free thinkers do not challenge this man he has an answer for everything." NO NO NO YOU CANT DO THAT ! ITS AGAINST THE RULES." This guy would still have us living in Europe because the world is flat.There is his way or the highway.DO NOT COLOR OUTSIDE THE LINES!!!

 

 

I too have ran full exhaust and intake with the stock ecu for the past close to 2 years probably. I guess some of us get lucky or something. I have been running this setup since before I joined the forum. And since before I knew about the "3 mod limit". So I just left it alone. I've never spoke up and said anything because you guys always tell everyone to get an ecu after dp, cb, and intake. And to be honest I don't need the hassling or the preaching of "you're going to blow your motor" I sometimes get "spikes" but no problems as of yet. I am getting an ecu soon but just so I can up the boost to 14 psi and supply the fuel, timing to go with it. I local guy that I rarely talk to was running a full exhaust, intake and stock intercooler and running 16 psi on his PFC. I guess some of us find out what works for us, rather then listen to other people.

 

Oh yeah and my motor has 109k on it...

 

Intellegence is what you lack you dont even know when you are wrong!!! 12-13 psi stock is fine I promise you!!I

 

 

 

As I stated in one of my first posts in this thread, I too had run an intake and full exhaust for more than 6 months with NO problems. However, I would never recommend this to anyone else since there is chance this could lead to a blown motor. Let's say that 99.9% of people running this setup would be just fine. I think it's worth not giving that last .1% the idea that it is ok to run this way. Someone out there will roll the dice and lose.

 

My car has also been running at 12psi for over a year as well with no problems that I am aware of. But who knows my boost gauge may be broke. I was wondering why that Cavalier kept beeting me when I was running 12psi. It must have been 2psi. Damn gauges. You just never know.

 

Geez. Dont back pedal enough.99.9% and you cant tell someone that they will probably be ok.Man you are Mr. Safety! were you a cross guard growing up? Looks like we should all check our boost guages LOST TIME thinks there broke!! LMFAO

 

I'm guessing you can't distinguish between a hypthetical scenario and a real one.