Thread: L67 mild mods

Originally Posted by jsnyder49090

you may be correct but the engine bay is pretty cramped On a F body i am sure they would but with fighting KR i would wrap those headers good.I was thinking about wrapping what i could on the stock pieces crossover atleast couldnt hurt.

Whatchu talkin bout Willis?

Woa wait a min are you trying to put this in an fbody?

Um

Put a 2.8 on it and call it a day already!

The **** is going on in here?

Definately french toast.

It is wrong.

look....guy...

do you wanna know why the vendors say you can run that pulley size with no mods??


ill state it again since you obviously didnt understand what blue said earlier.

they say this **** so youll buy from them, if you broke down the specs in their tunes, you would see that they drown the **** out of the engine in fuel to keep knock (predetonation) at bay.

if you knew what you were reading, and actually learned something from us, then you would have noticed the n/a stage kits suggest using 104 plugs.....you will never use a 104 plug on an n/a car because it is TOO COLD....Also the same concept as the stupid pig rich tune, keep the cylinders cold. STILL NOT HELPING YOUR ENGINE!!!!!

Buy a scan gauge/aeroforce...SCAN THE CAR!!!!....Put FLOW MODS ON, fix whatever you have to in the exhaust system, but just listen to us when we say that it doesnt need modified. a 2.5 catback will not effect what is going on in the cylinders. HEADERS, on the other hand, have a GIGANTO****INGMATIC EFFECT on how much knock you will have.

Like he said. They want to sell you a downpipe, then a plog. Then a set of headers.

Originally Posted by jsnyder49090

I would wrap those headers good.I was thinking about wrapping what i could on the stock pieces crossover atleast couldnt hurt.

Untill it causes the exhaust underneath to rust...

Originally Posted by jsnyder49090

sites been kinda freezing up all day i am on 3800 pro couple guys say they have a 3.4 pulley and a CAI and thats it lol.

That's because most of those guys are old school GP owners. I ran a 3.4 pulley with intake, dp, and 1st gen Intense PCM with 0KR.









And I guess I will add my name to the lucky list since I've owned 4 modded GP's all were daily's, 1 of which had a 3.0 setup and another which has 200K miles on the factory engine with a turbo kit and none of them chipped a piston.

Originally Posted by bluegtp91

Not really, this is where the discrepancies lie.

Can you run a 3.4" with plugs/t-stat/canned PCM/downpipe? Sure.

Can ALL cars? Not in any reality.

Most of these cars are getting older...and can't handle what they could off the showroom floor 10+ years ago.

Infact, many people here still get knock with headers and a 3.4"...and a CUSTOM wideband tune...

Which is why I say...valvetrain mods are key...and a tune > pulley envy; I'd run a stock pulley with headers and a leaner AFR + higher timing and running a piggy AFR and stock timing or less with a 3.4".

That's the main reason behind my Safely Modding thread. It points people in the SAFE direction, not like all the vendors that just say (Let's take ZZP for example)..."BUY OUR STAGE 1 OR 2 OR 3 PACKAGES AND GO SUPER FAST WITHOUT SCANNING THE CAR".

First things first should be maintenence.

Second, a way to scan the car...ALA tuner...or aeroforce.

Third, address the exhaust issues...you want to get rid of: AT THE LEAST the crappy front manifold, downpipe, and the u-bend...which can be easily done with a cheap set of headers...which are about, if not less than the price of a downpipe now days.

Fourth, then think about a pulley system...like an MPS...try a 3.6", then a 3.4"...then if that works for you...then re-tune for it...buy a wideband...make it spot on...

Tossing crap on a car and hoping for the best isn't the best route to go about it.

I don't remember typing this.

Maybe you should skim it again.

In the end a scanner should be your first mod. Im sure thats something everyone here can agree on. How people drive around without monitoring detonation is beyond me. It seems like youre more concerned with sound than anything else. You can build whatever catback you like, thats your preference. But at the end of the day that is not going to flow no better than the real bottlenecks of the system which are the manifolds and the downpipe. If you dont want headers right now just get the pulley, intake, pcm, plugs, and scan. Many of us ran for years like this with zero problems. Also if carbon build up is a concern seafoam the engine. Its easy and kinda cool at night. Good luck on your build, let us know what worked for you.

needs more headers and cam.