I have read a lot of stuff on phenolic spacers and I have seen the "dyno" charts, but do they really work? For the I4, the gains looked great, but were a little unbelievable. If anyone has used them, I would appreciate some feedback.
Couldn't the explanation to this just as easily be pionned on the fact that you have now changed your intake path length?Baja Wes said:The tests I have seen show a little gain down low, and nothing up high. This makes sense as down low the air has time to heat up cos it is going slower. Up higher it is going through so damn fast it doesn't have time to heat up.
Millenia gaskets work just great on the ZE and you don't need to worry about raising the IM any more on a hood that rubs on it as it is. As for gains, I just don't see it. How long is air in the IM anyway? When you actually drive for power your RPMs are no less then what? Maybe 3K? So at 3000 RPMs per minute, 2.5L engine, we'll say 75% volumetric effieciency. Well, I don't really want to do the math, but frankly I don't see the air being in the IM long enough for it to make any appreciable difference. And let's face it, the IM will heat up anyway. It's just gonna take longer. All that being said, I'd much rather take the money used to keep my intake cool and save it for a cold beverage or 2 to keep me cool.Mr. MX6 said:I don’t know .. probably not but with out a doubt they do keep the inlet cooler.. and with the ZE you have to use something for gaskets(KLZE gaskets are not so easy to come by)
parisifal said:Yah, definately question the intake lenght.
The Phenolics are like a good 1/4" higher than stock, consider that this is after the runners it's a big big gain. Not to mention the injectors are now squirting into a longer injector port allowing "maybe" a better mix.
There's already a few people who have accomplished this as I'm sure you're well aware. If you're gonna jump into reprogramming ECUs from phenos, you should also consider the offering them with the ZE VRIS points as well. I'm sure some of us would love another option in that arena.scmorgan said:Also, as far as the VRIS points go, the addition of spacers affects the points very minimally. The resonance points, as stated above, move on the order of 50 RPM. Outlaw is considering offering custom ECU chips (EEPROMS) for those that would like to have different VRIS change points, rev limits, etc. Anyone interested?