I have had the REVi on for a few days, although have only driven it twice because I had to get the water pump replaced.

Anyway, I have not felt any power increase except that it does not drop off as much after 8500. So between 8500 and 9000 I can tell that the engine is still pulling. But every where else it feels the same. If there are increases, they are too small for me to feel. This reflects the HP numbers produced by Racing Beat.

As far as sound goes, the difference is subtle for me. Almost like the sound of my RB exhaust except coming from the front (and much quieter). Kind of balances where the sound is coming from (front to back). Can also hear a bit of sucking sound at higher rpms.

Bottom line for me: I was a bit underwelmed based on the initial feedback here. The combo of the RB exhaust and intake does improve the audible feedback but the HP difference is too small to notice.


-Dave

 

All I can say is "ditto"....sort of :o

At first, my thoughts toward the intake were less than enthusiastic. I thought, I'm sure it's a quality product, but why spend $300 for 2 HP.

I must say, I got caught up in the frenzy and purchased one. Did I make a mistake, well, yes and no.

If my goal was to gain to HP that I could "feel" then I made a mistake. I, like you, was expecting a significant difference in performance, and quite frankly, it's not there.

However, there are beneifts to this intake. The sound is great at WOT, and the upper RPM's feel less strained versus the stock intake, which is nice.

The best benefit for me is that my "marbles in a can" sound which I had with the stock intake is virtually non-existent. :D That alone to me was worth the price of admission.

So, to summarize, for me the product is EXACTLY as RB described it. It gives minor HP gains, and greatly increses the "sensory" satisfaction of the 8.

Would I do it again? Well, if I had $300 laying around without a home, then I'd say definately. If I were on a budget or saving for FI, then I'd say pass on it.

 

OK, feedback from the track.

At Mazfest I experienced no problems with the Revi intake.

Speeds in triple digits and Rev's to 9,500.

If anything, I had more control due to the increased torque.

On the way home no problems except I think I'm getting about .5 more mpg.

 

As far as I know. Mine is better around town by a little. Even after some very hard driving this weekend, I was at 115 miles on 1/2 tank of gas. Which is just a little better than what is was prior to installation. Try resetting the ECU again.

 

Mine has actually improved - and by a noticeable amount. It is most pronounced on the highway - and I almost always cruise above 4200 rpm in sixth - with plenty of 4th and 3rd gear 8500 rpm passes. Yesterday, while in the mountains I got 22 mpg Imperial - 18.3 US). If I keep it at the speed limit the milage is actually well in the 20’s (US) now.

 

A thought:

Our cars seem to have significant differences off the assembly line. Some cars run rich, others lean, some dyno 160 stock - one guy dynoed 200 stock. I think the only way a new intake could produce more power is by 1) fooling the MAF by changing the way air flows around it and effectively changing the calibration. or 2) eliminating a restrictor plate effect when the car really wants to breath. I don't think our stock air box is acting like a restrictor. So, that leaves the MAF calibration hypothesis.

Since our cars are so different in terms of AFR, maybe that's why RB claims 2HP, Polak got 10HP, some claim a noticible performance increase, others don't. Personally, I think that I got a lot leaner after installing the REVi. I had to change my CZ maps drastically. I went from +40% in some cells to a max of +17% after installing the intake to maintain a 13.5-ish AFR.

But, as we all know, if you are trying to use a piggyback, you have to tune it you YOUR car. I bet the same differences go for the REVi - not that you have to tune it - but that some folks will see a lot more bang than others. just one of the joys of owning a car thats smarter than we are....

-MD

 

I filled up the tank and installed the REVI intake this tuesday, 5-10-05. Had 241 miles on the car and filled up. 24.7 miles per gallon. Was getting 20 miles per gallon since the n flash. Even pushing the car more now to hear the sound of the intake with the borla exhaust and still did better. Borla was put on in December. Could just be coincidence, I guess.

 

Sorry to drift off topic, but I have a quick question. It might have been answered but I did not find it. I recently ordered the RB intake and didn't see a list of required tools anywhere. I don't want it to arrive and not have the means to instsall it Thanks to anyone who can help

 

If you ordered it from Racing Beat it should come with full instructions as well as a list of tools required. There aren't any specialty tools needed.

Pretty much need:
Short phillips screwdriver
Medium phillips screwdriver
Flathead screwdriver
10mm socket and wrench
Long nose pliers

Later if you go to clean/change out the filter it's recommended that you have a torque wrench when reinstalling.