How much Boost on Stock Internals?

[Isphius]

Originally Posted by IHateHacks

Fuel cut is when the fuel pump can no longer flow enough fuel to supply what the injectors are demanding.

This is where you said the fuel pumps fails. Not fails at life, but fails its job. The fuel pump can flow more than enough for the stock injectors. The ECU causes fuel cut, its a safety feature. It doesnt "just happen"

Originally Posted by IHateHacks

First of all AFM's run on voltage not frequency, its not a motherboard cpu. Ever read live data from a scan tool?

Guess what happens when there is not enough fuel? Detonation. Air is plentyful, you will never run out of air on a motor. It's fuel you will run out of. Which causes the Air Fuel ratio to spike, causing detonation. All of this happens faster than you can blink your eye.


"And detonation happens because the inside of the motor is getting so hot when the piston is on the way up it detonates the fuel before the sparkplug does"

Nope, thats preignition. Detonation is an explosion inside the cylinder no matter what stroke the piston is on and it usually results in a hole in your cylinder block. I've seen it before.

"also not because of fuel"- No, its because of lack of fuel that the stock fuel pump can not deliver.

"It is not the fuel pump failing."

Never said that, please quote me where I stated that.

Turbo AFMs produce a frequency. Thats how the ECU knows how much air is going by. And detonation is when the air/fuel is ignited by a source other than the spark plug, Mr technical. And it does not blow a hole in your cylinder, it makes a knocking or pinging sound. ANd no, Im not denying that it can break your block, but it does not always happen. Preignition is when it just happens to ignite because it touches a hot piece of metal. Pre Ignition is a form of detonation. And there is no way the air/fuel can ignite other than the compression stroke, because all other times it isnt inside the cylinder. Please do not try to correct me because your ego is bruised, I only do it so people can read things and know what they are talking about. Im not interested in starting any flame wars or "who knows more" contests. I know what I am talking about, And if i dont, I keep my mouth shut. So you should do the same.

[Isphius]

How an AFM works
http://www.supracentral.com/content.php?article.88



Detonation and preignition
http://www.misterfixit.com/deton.htm

[dcrusupra]

Closed so I can clean up the garbage that went on in this thread.

Edit - Don't fight, learn to lighten up a bit. I dont want to have to clean anymore threads. supraman121 and kwnate, heres your first warning. dont do it again. and please, a message to the rest of the forum, dont encourage people to fight.

[dcrusupra]

Originally Posted by 88Tsupra

hey whats the best injector brand to go with

Dont ever buy Venom. Your best bet would be RC Injectors.

[flight doc89]

Originally Posted by j3pz

a very delightful discussion here

stock ct26 is good to 13-14psi, after that its just a hair dryer. ive heard that fcd isnt any good but thats just what ive heard.

had a guy an import tune shop tell me ma70's hit fuel cut at 14.7 psi.

EDIT: of detonation and preignition, here's another good article
http://www.enginehistory.org/wbn/WBN07.pdf

http://zhome.com/ZCMnL/PICS/detonation/detonation.html

there's another article i found in an aicraft magazine a while back that was REALLY good, but i can't find it yet :bah:

[Isphius]

i dont think any stock car will make it to 14.7 psi, more like 11-13, 13 if your lucky. Mine fuel cut at 9.5 psi once. And the ct26 can be upgraded to about 400rwhp, but at that point its not going to last very long.

[88Tsupra]

thanx so no venom and on the RC injector which would be the next best upgrade...i heard 550cc buh if i plan on building the internals too would it just b better to upgrade to a 720cc righ away or wait and wha kind of fuel pump would fit best ty