As far as detonation and the Renesis goes... what RG has posted in another thread makes sense. The Renesis is NOT the REW. In the REW if you have detonation it'll blow the apex seals into the peripheral exhaust port. Since the Renesis has only side ports AND newer, stronger seals (shorter too I believe), it is much more tolerant of detonation. Several forum members have already seen it with their experiences in modding and tuning on their cars.

87 vs 93... been heavily debated before. I need to see post 480. Until then... I am curious about this as the strategy Ford used on the V8 in the new Mustang was to aggressively tuning the ECU for 93 octane, but sell the car as 87 octane. The ECU has enough control... is advanced enough to compensate for whatever gas you run in the car. Run 87... it'll pull timing. Run 93 and it'll advance it. With the sharing of engineers and parts (the ECU's are different though)... I am wondering how Mazda went about this.

 

Saw post 480... hmm. Interesting. Makes me wonder why Mazda recommends 93 (not requires). I think I'd like to see stock ECU dynos on 87 vs 93... makes me wonder what's going on in the box.

 

japan 8

if you read about a page before and after you will find the note about testing with 93 first and my car did not like it above 7k.

lot of neat info.

beers

 

^^ read the post before yours. I did see that post on the results Scott got with your car. My question is not about his tuning and rotaries in general, but why Mazda recommends 93 and how the stock ECU is behaving. I still have some suspicions about the ECU playing with the throttle body even when you're running a "piggyback" (I still consider the Interceptor-X a type of piggyback in this application).

 

I must recognise that I am a bit dissapointed about the max output of the renesis in NA. I was hoping/wanting/wishing about 5-10 whp more.

Nevertheless and being positive let summarise the results in terms of absolute power:

Before: about 195 whp (with some of the usual bolt ons)
After: about 204 whp

I would like to point out that the "prototype" car choosen was one of the "good" ones as usually a stock RX8 puts 175-185 hp at wheels. If the results are consistent and repetitive with all/most of the cars I imagine that "weak" cars (170-180 whp) can reach 200+ whp as well.

If that is the case, weak cars would benefit clearly from the use of the interceptor-X more than "naturally powerful" cars.

Having said that, I still think (wish?) that 210-215 whp can be possible from a N/A car +the interceptor-X safely tuned. Let us see the forthcoming results for different configurations, fuel type, etc.

Something that I appreciate from the interceptor-X is that the gain of torque is quite decent from about 5000 to 8000 rpm. Additionally mileage will be improved between 2000-5000 rpm as it runs leaner than stock (sometimes much leaner), so no power/torque gains there but some fuel saving. Let´s wait for user reports about this subject.

Hope that idle and general smoothness are not affected or are even improved.

Regards

jird20

 

the biggest change is in power between 6k rpm and 8k rpm... up to 22hp.... this is something you can feel.

beers

 

Hows your cars idle and start up? It seems that the turbo folks that are using the product have varying responses regarding this topic...

Have you noticed any other changes at all while using this product other than the power increase?

 

dave,
i only drove it for about a half hour... scott is still working on it.... think he is on vacation..

one of the things he is messing with is the idle with ac on.

as to other changes the biggest thing i noticed was that when you roll into the throttle it was somehow smoother in a big way. i dont know how to explain it other than that.

i hope to have it next week. but it will be done when it is done. would rather have it right the first time.

beers

 

Oh, I didnt realize that he was still working on it. I thought that you had your car back and it was a done deal...

 

I wish we could see a better dyno graph like I asked B4.

 

no,
all the high power and dyno stuff is done, think he is tweaking all the little drivability stuff...

if i had it i would have done a review by now. it is very nice.

beers

 

Besides the Intercepto, what other mods are you running? (sorry if it has been asked before)

 

revi and duct, corksport catback exhaust.. the car has a midpipe with a borla resonator right now it will be replaced buy a rp cat.

has lots of other mods, but none that would have anything to with power...

beers

 

Thanks!

 

When do you get it back beerman?

 

when it is done.

beers

 

waa waa waa

 

Per jird20's post - Swoope, how long after testing will it take you to run enough miles to get initial MPG numbers? Kudos to Scott for a great job! I'm sure that many of us would have gladly plunked down an extra $1,600, when we bought the car, to get the HP and MPG improvements promised by your product. The ability to carry forward to FI is a definite +!

 

Thanks for the feedback! If you notice the power output #'s I have made the RWHP that everyone thought they were getting from the factory.

 

GREAT JOB SCOT!!!!!!

this proof that mazda made a 247hp car.

 

why pay 1600 when i can get a hks f con for this car for 1000. and get it tuned for a few hundred more. remember this is not 1600 tuned will still need to spen few hundred to get it tuned

 

The F Con Pro, harness, and sensors will cost you at least $1900 not $1000.
$1400 F Con Pro
$400 harness
you also need map sensor and temp sensor

 

Scott,
I know this thread is for N/A cars but I just watched your video of a dyno pull on your website and I was just wondering if you have 2 different pre-programmed values that you will ship the Interceptor with for N/A or for turbo cars.

Holla at your boy,
Whitey

 

um, Not.

 

not to mention that this can only be purchased and installed by certain shops, and there's only a couple in the US...unless you're talking about getting one used, in which case you're comparing apples to oranges. plus have you ever seen a street rx-8 with a working FCON setup? i haven't. not even a track-only car.