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Briefly, I don’t Believe collector size is your difficulty, not less than at 1500RPM. I think the trouble is that your exhaust velocities are as well small at low RPMs, which suggests you’re not getting the scavenging you wish.
Are you aware of mucb of the effectiveness attain I would get from introducing a header which is it attainable for me to remove The 2 cats from my motor vehicle devoid of owning any efficiency problems?
I was just thinking, I have 2000 Mercury Grand Marquie that I purchased employed but in great situation with only a hundred and forty,000KM on it. I installed a K&N recommended tailor made cold air ingestion with shroud And that i also installed a Helix throttle spacer over the throttle physique. The vehicle arrived with just one exhaust from manufacturing unit so I'd a custom dual put on via the general performance shop in my space. We cut the original Y and made two separate exhaust by adding the remaining drivers aspect. We place a daily muffler around the left facet and saved the first on the passenger side. The overall performance was superb plus the automobile would squeal the tires Despite having the traction Manage engaged.
The maths is equally as you say. You utilize the right dimension for The one, then smaller sized dimensions if you Visit the duals. The muffler really should be straightforward to locate in that measurement configuration.
I have a 1998 Chevy Silverado using a 5.7liter I wan yo switch the stock exhaust with One more put in place not very certain what’s the very best size for performance the truck is stock but I'm sure I would like a whole new method because of melted cats I would really like yo depart place for general performance for the reason that I’m at school in the mean time so I don’t want to get to re do my exhaust all over again I used to be imagining 2 3/4 any recommendations?? Thanks
You're more info here proper. For many unknown explanation, Nissan set four cats on a lot of the xterra/frontier. I would like to rid of all of them, but as I have read from your before posts, they shouldn’t be much too constricting when compared to hiflow as They may be very good compared to days of old.
I can’t imagine this thread has become occurring for five+decades! Many thanks Jason! Soon after reading through by means of each of the posts, I don’t Believe my problem has become covered. I've a seventy one Blazer having a 350 SBC which i estimate to become while in the 350hp assortment.
However, You furthermore may want to verify the header tubing is bigger compared to exhaust outlets on The pinnacle. There really should be a short “cliff” or “action” concerning The top outlet plus the header inlet. This functions being a barrier versus exhaust gases flowing back again into the head.
That’s very good to hear. I’ve noticed an increase of reduce end tq but haven’t experienced a chance to make runs or take a look at the top rpm variety however. I do benefit from the extra reduced conclusion although! Thanks for the info faq videos on pogo and piece of intellect, it's significantly appreciated!
Austin – Why put an x-pipe on the V8? The exhaust is of course well balanced…connecting the two sides that has a pipe shouldn’t make any distinction.
Would be the manufacturing facility y-connector broken, or can it be initial? If it’s authentic, it’s most likely bent like that intentionally…the shape with the y-connector has a bit impact on the way in which the exhaust works.
Ah, top article you've superbly confirmed my suspicions. Now I'm able to halt exploring the web trying to find solutions. I may also appreciate a pleasant sigh of aid. Thanks.
Ron – Does the header manufacturer have a suggestion? What you’ve proposed seems realistic, but I’m wanting to know about the worth of the reducer that’s 2 feet down the line.
Garret – Getting rid of that cats could possibly influence general performance, mostly because the exhaust manifold is developed to accommodate them. If you swap out the inventory manifold for a header and take away the cats, you may see a little attain – five% seems like the higher limit (6hp, give or consider).