Quote:
Originally Posted by Johnny Danger
ST,
I don't disagree with your approach, nor the results of your upgrades. My advice to the OP simply was - adding headers (regardless of who or where they're made) in conjunction with the very restrictive cats on a 2.5. - would be fruitless in terms of increased power or performance. Going catless as we both agree - results in a very noticeable loss of low end torque. In addition, since this is a North American vehicle, going catless would further complicate the process by virtue of our OBDII compliance/emissions requirements.
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I think I stated somewhere I thought the biggest restriction was the stock cats.
I think our points may have been lost through the eloquence of our verbiage.
Im sure if you ran the full system through cats it would quiet things down a tad as the cats are a resonator of sort.
Probably, well probably most certainly more hassle than its worth.
Not sure how much losing the low end tq would bother me because on these little engines you shouldn't be down there anyway.
So to sum up so far......Biggest bang for the buck here is the CC cat back. The CC headers open a can of worms when considering cats and emissions compliant, a lot of hassle and probably pricey cats for not a lot of return. Can be done and probably does add something to the upper end. Seems quality is pretty good.
Charlie must have some of his best guys laying down the Porsche pipes!