Compression Ignition Addict
Join Date: Mar 2011
Location: Brunswick, GA
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XDP will knock around 5% off if you by intake, programmer and exhaust all together. Call and talk to them about pricing.
As for the exhaust... I put the 4" MBRP system first on my completely stock 2000 Excursion. I noticed a difference in performance with it on alone. I then installed my Gryphon programmer and then the truck woke up. I wonder whet the truck would feel like with the Gryphon 80Hp program with stock exhaust and a muffler delete, I don't know. Would the same power feel came about with a muffler delete verses the exhaust swap? I don't know that either. A definate advantage with a larger exhaust, it help keep the EGTs as low as possible. When I took my stock system off, the DP squeezes down to probably 3" at the top bend. That definately doesn't help us out any.
Just a few cents from the peanut gallery here...
2000 Excursion XLT w/ leather
Purchased stock. Now consists of PHP Gryphen Edge CTS programmer, MBRP 4" turbo back, AFE Stage II CAI and BTS valve body swap. Rear RAS load handling helpers. Helwig rear anti-roll bar. Soon to install is a 31 row 6.0 tranny cooler.
(Waiting to pull my 2 Buicks to shows and races)