Finally, an Offical Evolution 02 DUMP!!!!
Jun 26, 2008, 05:28 PM
#91
For those planning on this mod a retune should be in order. My A/F's leaned out and I had to add some fuel. Definately more flow with this piece and I had a 3.0" turbo back. This mod makes power for sure, loving the noise it makes too. Every overpass is a welcome treat for me.
Jun 26, 2008, 05:30 PM
#92
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yes adding fuel was a must......i hit some knock actually on the first test run.......so more power was def there........lol
i love the people that cruise on their cell phone with the windows down....thats when i love to kick in the roar......LOL
i love the people that cruise on their cell phone with the windows down....thats when i love to kick in the roar......LOL
Jun 26, 2008, 08:48 PM
#100
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I've stayed out of this.... I represent EvoPowerMods.....on our original test mule 06 MR we found 14 peak HP and consistent gains of 10-14 HP across the rev zone, from down low to the midrange and all the way to redline on our test vehicle we saw HP gains, but more importantly we saw other significant benefits. Spoolup was vastly improved, Full Boost was obtained much sooner, ability to hold full Boost Longer was seen, ability to add more timing due to the fact our o2 Dump actually cools the charge air...]
I don't buy the part about spoolup being "vastly improved" either. In fact, I don't see a WG dump cooling the charge air temps. Sounds great but I don't buy this package of Pablum.
Jun 26, 2008, 09:13 PM
#103
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So, explain to me how an O2 dump will "vastly" improve low end power and spoolup. Just the act of you purchasing an item doesn't substantiate some of the claims being made by the manufacturer. How does an O2 dump reduce charge air temps anyway? And if so, by how many degrees? I don't actually doubt the veracity of your claims. But, I was just wondering.
Last edited by sparky; Jun 26, 2008 at 09:28 PM.
Jun 26, 2008, 09:16 PM
#104
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I believe the 10-14 whp gain. This is nothing new. Been around forever and just now has caught the attention of evo masses. By separating the exhaust and wastegate gasses into 2, there is less turbulence and backpressure. Both of which are bad when it comes to a turbocharged engine. I dont know about it cooling the air charge, but anytime a engine becomes more efficient, there is less losses from heat and such.
Jun 26, 2008, 09:17 PM
#105
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Originally Posted by razorlab
In theory the dump 02 should make the most power. It is loud though. I've seen the Titek make more power than the Invidia. You really want the wastegate and turbine gases sectioned off for as long as possible, which is why the dump 02 should work the best in theory.
