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Delco Tcv Vs. New Oem?


jschaefer7406

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Hello all,

Been doing a lot of reading and searching on the Delco TCV. Most threads seem to deal with replacing a tired OEM unit with the Delco though, and nearly all are on M4.4 cars :(. Have a fairly new OEM valve to use, would have to invest in the Delco to compare. I know, I know...its cheap. Just hate to wait for shipping and such, only to find it's no better than stock (assuming both are new).

So, does anyone happen to have a direct side-by-side comparison between a new OEM Pierburg TCV and a Delco unit (preferably on a tuned ME7 car?) Mine is a 2000 S70 LPT, 15G and 15 psi Woth tune...

Thanks,

Joe

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Jan doesn't believe in running anything but a stock wastegate unless you are running a huge amount of mods at a very high boost level. I've only used the stock TCV but I would think the tune would have to take into account a different TCV in order to take advantage of it...

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I drove the delco in my t4 with me4.3 with no problems.

boost was increased after istallation!

now, i drove it with a obx exhaust, do88 intercooler kit, 18t charger and mte tune with no problems. car runs strong and nicley with it

i mean t5... not t4 sorry bout that

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I tried both. originally purchased an OEM TCV, then found an ac delco one online for $12 shipped and new (can't beat that). I don't have any dyno results or anything, but I adjusted turbo to 5psi before using the new OEM one. There was a noticable difference between the old sloppy OEM one and the new. Then I tried the new AC Delco one. Wow, what a difference. The AC Delco part seems to be much more responsive than the OEM. I also got slightly better gas mileage (20.1 with OEM and 20.3 with AC Delco). That is probably due to other factors, but I don't know.

I'd go with the AC Delco one.

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