Real Performance from a V6 Vortec!!

[Blazer SS]

Back pressure is a big deal. My truck did not run right until I addressed this. But some people think of a motor as a big air pump, the more air that you take in, the more that you have to get out. If there is a restriction in the exhaust more air will be trapped in the engine, and less can be taken in. Since a motor is not a balloon and cant expand to cope with the extra air what do you think happens? the cylinder intake is restricted resulting in less horsepower. So in my case with a supercharger, I need less restriction. (Freeflowing). I forgot to mention , I also have a crane cams HI6 ignition system with a manual retard controll and also a seperate map sensor. That addressed the sensor issue. There is a step by step instuction on the removal of the throttle blade restrictor, you just have to do a search. And do not drill the rivets! Just cut the restrictor off. The mods that I have done have resulted in more power for me. I will post pictures if people really want to see it, although it no longer looks like a sleeper. Believe me I don't want to step on any toes, You all are very knowledgeable, in fact I have learned a lot just from reading your threads, and the more that I read the more repairs I can do on my Blazer.

[Blazer SS]

I also forgot to mention my Blazer still is a 4x4, and the ride height has not been messed with. The tire restriction was taken off and raised to 128 mph, my tires are rated at 150 mph. I have reached that new limiter, and it feels like someone just slams on the brakes, I do want to mention this is not done on the street! I don't believe in power braking to spin the tires, I have seen to many blown drivetrains, and if that isn't enough. Tires cost to much!!

[cleanshavenrsx]

1. im glad everyone can get along... in the honda forums they have a bunch of dick head punks that all they are there to do is trash atleast you people have a conscious and are man (or woman) enough to apoligize like that! now that i got that out the way......

can you get a nice deep sound from a v6 with a flow master as a v8. theres a shop that will flowmaster whatever you got with duals with chrome tips for 250...

im interested in that throttle body restrictor if any one has any info please let me know...

what do you guys think of an aftermarket intake just the metal tube with the air filter... would that be a better for it?

i want my blazer to run good hold its own and last... my body has 201756 on it the motor has 80k and the tranny is unknown but i dont think its going to last past winter...

any ideas on what i can do to make the engine run better and last longer and take the strain off?? restrictions are strain!! try breathing through a straw. gurantee youll pass out after a while try exhailing through that straw its alot of strain

[cleanshavenrsx]

i have a 1995 black lt

[Blazer SS]

I just read a thread on water decarbonization, this might help you out, just follow his instructions to a tee. And yes I have a very nice sound out back, but I have JBA headers, ceramic and a JBA catback exhaust, stainless ,single 3in. out of the rear. And but of corse, My LT is also black!

[cleanshavenrsx]

Originally Posted by Blazer SS

I just read a thread on water decarbonization, this might help you out, just follow his instructions to a tee. And yes I have a very nice sound out back, but I have JBA headers, ceramic and a JBA catback exhaust, stainless ,single 3in. out of the rear. And but of corse, My LT is also black!

sweet i love the black..... do you have tan leather also??? i wanted dark gray but i only paid 2300 so ill live with it.... where that thread at?

[BlazerLT]

Originally Posted by MT-2500

http://www.batauto.com/cgi-bin/Forum...ber=26018&pid=

MT
http://www.batauto.com/cgi-bin/Forum...ber=26033&pid=

You can't generalise one or two articles to be the gospel of intake and exhausts.

Our blazer exhausts are made to be quiet, not for performance.

A engine is an air pup and will ony intake and exhaust as much as it requires, nothing more. Just because you put an intake on doesn't mean more is pumped in, it just means the engine will get the air it is requiring at higher rpms.

And for high performance exhaust systems, I guess everyone that is a performance enthusiest are wrong in putting a free flowing exhaust on? Comon now, I don't know where you are getting your information, but it is wrong and flawed big time.

There is not cat back that allows no backpressure. Heck, straight pipe with now cats or muffler even has backpressure.

[Blazer SS]

Exactly, because of the pressurized intake that I have that pushes in the air instead of sucking it in on the intake stroke, I do have back pressure. Because of the cat the muffler and the bends of the exhaust system this creates backpressure. My engine at low rpm's sucks in air just like normal, But at higher rpm's the pressure increases to 8psi and actually pushes the air into the cylinder the results are a slight loss of engine vacuum. And yes my interior is also tan. I also have a pop off valve that removes the excess air in my intake ,in the event that I suddenly let off of the throttle.

[MT-2500]

BlazerLT
You have been reading to many hot rod books and not enough modern car diagnostic info and repair manuals.
You sound like the guys up there in the Honda forum. They already know it all.
To get a hot machine just add an intake pipe and an exhaust pipe that makes noise.
Car engineers have spent millions of dollars designing the best air intake and exhaust systems that are designed for your engine. And back the cat with an 8-year 80K warranty.
Also it was not only designed to be quiet it was designed for you engine.
When you go screwing around with it by adding a cold air pipe with an oil filed air filter and changing the cat and exhaust system. You only throw the whole ball of wax into turmoil. It can and will throw off the pcm system and will result in damage to the engine.
Also you can wind up with less HP.
With that said we need to decide if we want performance or a just a good running half way good mileage and long lasting engine. IF SO DO NOT SCREW AROUND WITH IT KEEP IT OEM.
If you are going to go for performance than do it right if you are going to do it.
You will need to start with programming the computer for what ever you are doing to the engine.
If you are looking for performance the pcm reprogram or chip is a good place to start.
On the air intake if you want more air in stick a blower on it.
If you want to let it out open up and enlarge exhaust.
Give it a little more cam for whatever performance you want.
And raise the compression up some and beef up the pistons.
Remember horses are made in the cylinder walls
Set up the gear ratio for whatever type of running you are doing.
Right gear set up can make the difference.
Or in other word do it right if you are going to do it.
MT

[BlazerLT]

Originally Posted by MT-2500

BlazerLT
You have been reading to many hot rod books and not enough modern car diagnostic info and repair manuals. You sound like the guys up there in the Honda forum. They already know it all. To get a hot machine just add an intake pipe and an exhaust pipe that makes noise.

And you sound like a closet shadetree automotive engineer coming into these forums acting like you know everything and basically saying that everyone here that has added a cold air intake and a free flowing muffler is now the same as a Honda import ricer?

Do you see how much of an insult that is to me and everyone here that has spent time and money trying to get more fuel economy, power and efficiency out of their engine?

But you are right, those mechanicsin those "hot rod magazines" don't compare to your knowledge of the perfect car setup which in your mind means keeping it completely stock. Every performance enthusiest that owns and modifies their truck or car is an idiot and knows nothing.

God you are setting yourself up for a good arse plunging aren't you. This whole forum is made up of the so called morons that are in your books just like the Honda guys..

Prepared to be flamed because you sure as hell deserve it.

Originally Posted by MT-2500

Car engineers have spent millions of dollars designing the best air intake and exhaust systems that are designed for your engine. And back the cat with an 8-year 80K warranty.

OH NO! The SUPER DUPER ENGINEERS KNOWS WHAT IS BEST!

That statement alone shows you don't know what the hell you are talking about it.

HAHAHAHAHA! Yea, I guess everyone modifying their cars for some bolt on power and have the numbers to prove it are wrong right?

Originally Posted by MT-2500

Also it was not only designed to be quiet it was designed for you engine. When you go screwing around with it by adding a cold air pipe with an oil filed air filter and changing the cat and exhaust system. You only throw the whole ball of wax into turmoil. It can and will throw off the pcm system and will result in damage to the engine. Also you can wind up with less HP.

Really? Wow, I have done this and my "ball of wax" is not in turmoil. Taking the monster restrictive muffler off was the best thing I have ever done to my truck.

What is the damage you talk about? I would just LOVE to hear of the horrible damage that can come about from adding a free flowing intake and exhaust? Please, myself and everyone want to hear it.

Guess every performance muffler manufacturer and K&N must be a bunch of scams trying to rob us of the perfect engine brought to us from the great engineers at GM.

Originally Posted by MT-2500

With that said we need to decide if we want performance or a just a good running half way good mileage and long lasting engine. IF SO DO NOT SCREW AROUND WITH IT KEEP IT OEM.
If you are going to go for performance than do it right if you are going to do it.
You will need to start with programming the computer for what ever you are doing to the engine.
If you are looking for performance the pcm reprogram or chip is a good place to start.

Really? Wow, so just keep everything stock and just add a chip to it? It is that easy, wow....

LISTEN EVERYONE , KEEP IT OEM!!! THAT OR ADD A CHIP TO MAKE YOUR TRUCK A RACER.

yea, that's right, you really sound like someone that knows what he is doing dontcha.........

Originally Posted by MT-2500

On the air intake if you want more air in stick a blower on it. If you want to let it out open up and enlarge exhaust. Give it a little more cam for whatever performance you want. And raise the compression up some and beef up the pistons. Remember horses are made in the cylinder walls Set up the gear ratio for whatever type of running you are doing. Right gear set up can make the difference.
Or in other word do it right if you are going to do it.
MT

Ah, so you are saying if anyone wants to get some affordable pep out of their engine, they might as well forget it and tear their engine down and spend 1000s right?

Wow, guys, it is THAT EASY!!

Flyboy here has practically called you all a bunch of ricers and everything you are doing is pointless and you are stupid for doing it.

You brought it on yourself.....you deserve everything you get for insulting everyone here like that.

[2000blazerls]

Gotta agree with LT here. You sound like my grandfather. When I added my intake, free flow cat, and new muffler I noticed a nice gain and much better sound. My gas mielage is still good and my truck is driving fine. Maybe you should try some of these products out before you go blabbing about how bad they are. I mean we are talking intake and exhaust. Not going to make a huge difference in the engine. And engineers do not get paid to make it a high performance machine right out of the factory. They get paid to make a mcahince that will run long enough for them to come out with a new design so they can sell you another one and they do it as cheaply as possible. Plain and simple.

[srbianats]

2000blazerls, I checked out your cardomain site. Which muffler do you have? I like the sound alot.

[BlazerLT]

Originally Posted by srbianats

2000blazerls, I checked out your cardomain site. Which muffler do you have? I like the sound alot.

Don't worry about it, by what MT-2500 says, you will be a ricer is you install it and it will do nothing but harm your engine.

[Rmbodie]

I am with you MT-2500 . You factory trained guys are alot more knowledgable . Read back in these forums and you'll see OTHERS think they know everything , but nobody here claims to be a professional mechanic .And I am sure that NONE of us have PHDs in engineering . We are all back yard qualified . Trying to get help from other back yarders . Learning from some one elses screw ups. These high tech engines are very sensitive to every detail . Sensors operating in ranges of 1/10 of a volt , air pressure , altitude ,etc. I have messed with most of my autos ,but prefer the older ones that you can get away with it . computers are not very forgiving . You wonder why he's not a moderator anymore . Arrogance has no place here.This site should be for advice , and yours is well taken . Rob

[BlazerLT]

Originally Posted by Rmbodie

Arrogance has no place here.This site should be for advice , and yours is well taken . Rob

Well then read his posts where he claims anyone that does have a cold air intake and a free flowing exhaust or any mod to be just exactly like a Honda ricer kid.

that my friend is arrogance in its highest form and you say, it doesn't belong here.