blow-thru set up S13 SR

[Matej]

Originally Posted by Om1kron

you can't run blow through on a stock SR. that is the short and simple answer. you need engine management and a map setup. PERIOD, I will not go into specifics nor do I need to. The engine was designed to run a certain way, if you want it to run opposite of the way it was designed you should be able to do the research on what is needed to accomplish such.

All the research up to this point has led me to believe the opposite.
Why would it not work?

[Om1kron]

Originally Posted by Matej

So what is the main issue with using a blow-through setup? The MAF popping off?
I could see that being a problem with the plastic MAF's such as the Z32, but if I were to use the stock S13 MAF I think it could be easily amended.

The regular maf itself receives air before the turbo, no pressure runs through it therefore there isn't 7-10lbs of air pressing against those little resistors that tell your ecu how much fuel and timing and yada ya your car needs.

take your maf off of your car, and give it about 5 lbs of pressure with your finger and then let me know if it still works when you put it back on your intake. (and I'm talking about the electric part that is held in by two screws)

I sometimes wonder if you guys try to use your brains before worrying about having a cool open mouth turbo on a stock setup LOL!

[Matej]

Originally Posted by Om1kron

I sometimes wonder if you guys try to use your brains before worrying about having a cool open mouth turbo on a stock setup LOL!

It was to be for a tucked engine. I thought I could get rid of the extra piping and filter.

I suppose if it will not work with the stock ECU then I will not do it.

[ryandriftingfat]

Originally Posted by Matej

It was to be for a tucked engine. I thought I could get rid of the extra piping and filter.

Sacrificing normal engine operation for looks.

[Matej]

Originally Posted by ryandevilhorns

Sacrificing normal engine operation for looks.

It is just an engine. Who cares.

[bussitcustoms]

Originally Posted by ryandevilhorns

Sacrificing normal engine operation for looks.

Getting rid of a significant amount of piping isnt just for looks.

[jlawdet]

Originally Posted by Om1kron

The regular maf itself receives air before the turbo, no pressure runs through it therefore there isn't 7-10lbs of air pressing against those little resistors that tell your ecu how much fuel and timing and yada ya your car needs.

take your maf off of your car, and give it about 5 lbs of pressure with your finger and then let me know if it still works when you put it back on your intake. (and I'm talking about the electric part that is held in by two screws)

I sometimes wonder if you guys try to use your brains before worrying about having a cool open mouth turbo on a stock setup LOL!

Its not for looks bro lol its so i dont have the surge cause of my bov and my engine bay is tubbed so putting my MAF on the opposite side would save alot of head aches for my since i will have a clutch fan and a shroud. Ill keep doing my research and see what i can do. Im not one to give up because one or two ppl say no or not to do it.

[Sterlz]

Originally Posted by jlawdet

Its not for looks bro lol its so i dont have the surge cause of my bov and my engine bay is tubbed so putting my MAF on the opposite side would save alot of head aches for my since i will have a clutch fan and a shroud. Ill keep doing my research and see what i can do. Im not one to give up because one or two ppl say no or not to do it.

If thats your only reason for doing it, then why don't you just recirculate your BOV? Get a bung get it welded get some hose call it a day....you wouldn't run the risk of messing something up.

[bussitcustoms]

Originally Posted by Om1kron

The regular maf itself receives air before the turbo, no pressure runs through it therefore there isn't 7-10lbs of air pressing against those little resistors that tell your ecu how much fuel and timing and yada ya your car needs.

take your maf off of your car, and give it about 5 lbs of pressure with your finger and then let me know if it still works when you put it back on your intake. (and I'm talking about the electric part that is held in by two screws)

I sometimes wonder if you guys try to use your brains before worrying about having a cool open mouth turbo on a stock setup LOL!

Sounds like youre just looking for an excuse to sound superior, and flex your badass Internet muscles. If you don't know what you're talking about, or don't have anything nice to say, keep it to yourself. Blow through setups on SR's have been done successfully, without a standalone ecu. My tuner (who does MOSTLY rom tunes) has done a few of them.

[Kingtal0n]

1. Let them try if they must; we are clear conscious because we warned against it.

2. Ask yourself: IS the benefit worth the time investment? What exactly is the benefit? Supposedly, you can run an atmospheric bypass...

Wait a minute, don't many people with SR20 engines run atmospheric bypass valves without recirculating them already? Are these cars special or magical? Is the ECU really dumping fuel into their engines when they shift?


A fact for your consideration:
When you lift your foot from the pedal, such as during a shift, the ECU goes into a FUEL CUT mode, where NO fuel is being injected. So DESPITE the fact your bypass may be atmospheric... the ECU does not even notice!

SO WHY DOES IT MATTER THEN?

Ok, the meat and potatoes. The ECU does not ALWAYS fuel cut at the right time, and the bypass does not ALWAYS open or close when it should be. There are situations, that depend both on the MAF location, Bypass location, bypass manufacturer, design, age, vacuum source, etc... hundreds of variables determine whether or not the ecu will be adding fuel when it should NOT be adding fuel.... THOSE are the times that a recirculated bypass is important, THOSE are the times when it DOES ACTUALLY MATTER if you recirculate or not.


Knowing this, I offer a simple piece of personal experience:
If you desire an atmospheric bypass and/or you do NOT want to recirculate, simple buy an AUTHENTIC HKS SSQV and stick it on the hot pipe. That particular bypass valve has been PROVEN to remain shut when it needs to be shut, and offers the atmospheric quality you desire without the necessity of recirculation. the ONLY drawback is that the HKS SSQV is a "tight" bypass, your turbocharger will still experience surge, which is not a good thing. But HAVING the bypass that serves SOME purpose is better than NOT having a bypass at all.

So to recap:
1. Recirculate if at all possible, using a push type bypass, such as Greddy Type-S, set to its weakest setting.

2. If fail recirculate, run an authentic HKS SSQV on the HOT PIPE with a dedicated vacuum source.

[jlawdet]

Originally Posted by bussitcustoms

Sounds like youre just looking for an excuse to sound superior, and flex your badass Internet muscles. If you don't know what you're talking about, or don't have anything nice to say, keep it to yourself. Blow through setups on SR's have been done successfully, without a standalone ecu. My tuner (who does MOSTLY rom tunes) has done a few of them.

busssssssss lol