That would be great Gary! Thanks! I asked on the CFB and I don't think anyone has responded yet...I'll have to go check real quick again...I know there HAS to be a way. I know that there is one way and thats to put it on after you get ur emissions and then before yyou get it again next year...put the old back on...but come on, lets me serious here! Stage 8 header bolts?? try getting those suckers to come off with out bloody knuckles. I also thought that alot of the inspection station are going to just what your o2's read and not what the "sniffer" says. Thats what they did to my car last year. They never put that metal porbe down the pipe...they just hooked up the OBDII scanner thingie and that was that! Yeah....and if you go to Meck. County for inspections....the check EVERYTHING....they take a little scaled ruler and measure how much tread depth you have all the way around the tire! Talk about strict! Thanks guys! I'm open minded so keep the messages going!

 

wrong .. then all headers would make your car fail. and if more hp is dirtier than an lt1 would ruin dirtier than an l98 an an ls1 would run dirtier than an lt1

 

Yes more is getting in. The headers allow the exhaust gases to be removed quicker there by allowing the intake charge to be pulled in more efficiently = More of in intake charge = more power...


Jason

 

Aren't the FLP long tubes legal? I thought that I read somewhere that they are.

 

your moving the exhaust out quicker, but thats because the piston itself is moving quicker. It still is going to pull in the same amount of charge, its just going to do it faster. Since intake and exhaust are on separate strokes, the intake charge is being pulled in during at least one other cylinders exhaust stroke, and if that exhaust stroke works more efficiently, the intake stroke will work faster. This is the same concept as people who build a 396 stroker but put the stock heads/cam/etc on it and don't realize much if any gains...the intake tract is only flowing so much air at a given pressure, so your not really getting much more mixture in the cylinders. The only way I could see you getting more in is if the more efficient exhaust stroke allows the piston to build more vacuum against the intake tract, getting more in...but I wouldn't think it would be much if that is the case.

Injuneer you out there?

FLP longtubes are not legal, they still relocate the cats. They just happen to have all the emissions fittings on them.

 

well...that all makes perfect sense, all your doing is moving air out faster! The lt1 will still take in the exact same amount of air because your not altering the intake...this is the exhaust side. So when you put on the full exhaust on any car your just moving air out of the engine faster...am I correct?

 

On a real simple level, if the air is pushed out sooner on the exhaust stroke it will allow the fresh intake charge to begin being drawn in sooner. If the exhaust does not flow well, even when the exhaust valve and intake valve are open at the same time right at the end of the exhaust stroke, the intake charge will not be able to enter the combustion chamber because there is exhaust present. if you get the exhaust out and flowing fast, it will help draw in the intake charge :-)

Jason

 

The intake is going to be drawn in at the same time pretty much no matter what gets pushed out...thats a variable of cam timing and piston TDC timing...when the piston passes TDC and the intake valve is open, intake charge is going to come in. I don't see how headers are going to change that?

I could see maybe more backpressure equalling more leftover exhaust in the combustion chamber, but on a stock application I wonder how much that really is...I would still think that most of the gains are from the piston not having to burn HP moving the exhaust out of the system...

Not all power gains are a result of more fuel being burned...there are other methods, like not making the motor work so hard for each revolution (same concept as weight reduction on the rotating assembly or reducing internal friction).

I look forward to a response, I am by no means an expert and enjoy expanding my knowledge if I have some concept mixed up

Oh, and don't put it simply...make it technical so I know what your talking about