well my catback claimed something around there and I was pleased with the gains. I think I'm gonna wait till I can afford HFC's, drop in, z tube, and MD spacer then throw em all on at the same time just to see the difference, then run that till I can afford a tune. I have 150k miles so I don't really see building the hell out of the car, might be a good benchmark to call it quits at. not tryin to like race the thing.

 

HFC's or test pipes after the spacer.CAI is a waste of money on the G's.If you really want an intake,get the z tube an a K&N.

 

^yeah that's what I've gathered, just goin with the tube and drop in. are you saying HFC's after the spacer if I don't do it all at the same time?

oh and what do HFC's do to sound? My car is kind of loud (2.5 inch piping true duals to 4.5 inch tips i think) just curious how the sound alters

 

Just by installing BERK'S HFCs Codey, you gain an easy 8 RWHP. You'll understand why once you see what the inlet/outlet on the OE cats look like. Most of us tune our coupes because we've made so many mods we're throwing error codes and running lean. Tune isn't that pricey when you consider the results, I gained 24 RWHP & 12.5 lbs Torque....all for $550= Once you have a tune and make another mod retune is only $100 from my guy. That's why I made all my mods prior to getting a tune, just seemed logical....
Gary

 

Eh codey. One thing I'm going to warn you about is the fact that at lower RPMs I was finding my HFCs were a bit on the raspy side. WOT sounds ridiculous... awesome... but anything less guys were poking at me and my new "sexy" exhaust I'd been bragging about. I was really surprised by it.

The guys in here told me that if I wanted to fix that issue to go with ceramic coated cats... like the Berks. Cost a little more but apparently that's the way to go. Unfortunately I've never really looked up why it is that ceramic coated eliminates rasp- I went FI and I've found that Twin Turbos are a really great way (albeit not the most cost effective) to wipe out the bumble bees.

 

How can you tell you're running lean? I can use an app for the OBDII jack and probably find it there but is there a more obvious way to tell?

And itnkicn I would be looking into a supercharger or twin turbo kit if my car didn't have 150k miles

 

My FI comment was meant more to be tongue in cheek If it's not in your immediate future if at all then I still might suggest the stock cat. At the risk of running lean, go with the HFC. Good indications are knock, detonation and your engine exploding

Mostly kidding-

I was always told if I had a bunch of carbon buildup on my exhaust tips that I was running rich- which is a decent thing. Certainly better than lean in most cases... I suppose if your exhaust tips stay clean-ish that might be an early indicator- but in terms of going more technical than that you'll need to listen to some of these other guys who know more than I do. I'm still pretty green.

 

spacer test pipes and ztube just my .02

 

Once you have maximum air incoming and no restriction on the exit side you'll get the "Check Engine Soon" warning on your dash. Looking up the code it tells you it's caused by a lean condition. Not to the point to where you get the death rattle but enough to throw the code. Then it's time for a tune, that's when you get your $$ worth like I did!
Gary