Z1 headers + Motordyne Manifold

DEpointfive0

Stillen's headers are worthless. Once you have ONE exhaust mod, the value of the headers is null and void.
The OEM headers are pretty damn good for what they are.
Their HFCs are good, they do the job just fine, my only issue with them is that I feel the inlet diameter isn't as big as it could be, restricting flow. The design using OEM gaskets is great though.
And their CBE, it is THE ONLY exhaust that weighs MORE than stock. But the weight is at the àss end of the car, which isn't bad IMO because the rear of the car is too light, worst part Of it is that it loses value to high hell because no one wants a heavier exhaust (hell, it's the exhaust I run, and I like it. I also have or have had almost every Stillen product)

As an FYI, mods do not add power in a traditional fashion.
The equation is NOT: CBE+HFC+Headers=gain (18+16+16=50 HP gain)
It's more like CBE+a couple+a couple=smaller gain (18+4+2= 24 HP gain)
Law of dimishing returns.

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jckilla

Thanks DE- I think I'll just go with berks products after checking out their website & get the G3 intake setup and throw the typhoon unit on craigslist. So now it's berk HFCs, berk CBE, Stillen G3' z1 intake manifold , z1 oil cooler, stock headers. I like that berk gives you all the gaskets needed for installation, Stillen doesn't - thanks for all the help. Last question, should I ask the installation shop to let me keep the stock exhaust for resale ( the guy told me they just scrap it, seems like a waste to me, someone out there could use it? ) I spoke with the other place in town and they will do the UpRev tune for $600 out the door. Looks like I've got everything lined up right now. All help is much appreciated.

DEpointfive0

Great choices. May I recommend getting Z1 header to cat gaskets, they're well worth the $30.
Please go to a meet and listen to different exhausts in person.

Also, buy used if you can, saves money and things like an oil cooler and exhaust don't really get worn. At LEAST shop our forum sponsors, some of their prices are so low I don't think they make money...

Resell all your parts here. There's a buyer for everything. Stock cats aren't worth much, but I'll take your set!


Tune is up to you (I have every bolt on and run without it), and it's better to get the "tuner" version, has better resale value and gives you better options.




Lastly, please, read the forum. I'm trying to be nice by helping you out vs telling you to use the search feature.

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slam1918

I have Stillen G3 CAI, Z1 plenum, Z1 HFC, Stillen CBE & Uprev. recently added the intake & HFC so she's going in for a tune this afternoon at Horsepower logic. I'll post the dyno results. It's a bit noisier in the cabin so I will be putting dynomat in the rear. Stay tuned my friends