http://robrobinette.com/cgi-bin/i/im...simplified.jpg

Or you can use the nipple that the dark red line goes into on the Y-pipe next to the CRV.

 

once you reach full boost, the stock intercooler doesnt really act as a bottle neck like some might think. it more affects immediate response and possibly a bit of lag at low boost levels compared to a nicer free flow through design.

 

Not quite true. The stocker has a large pressure drop in comparison to aftermarket ICs. There was just over 1 psi difference between my PFS and the stocker. That means that with the stocker, the turbos have to boost another 1+ psi to develop the same manifold boost. This makes the turbos work harder and hotter = less power, especially at boost levels above 10 psi.

 

Not to mention NO airflow thanks to the idiots dynotuning, and a nuclear heat-soaked engine bay.

 

Note that she has a muffler installed on her midpipe so this might cause some additional restriction that helps prevent boost creep.

 

Yeah, but hell I was getting creep with a stock airbox and stock main cat! Most mufflers installed on midpipes are straight-through - that could be a culprit, but it's doubtful.

Another possiblity is no pills in the wastegate lines - supposed to be 8psi, but creeping to 10 .

Dale

 

I am running full 3" open exhaust and intake with NO boost creep. I have some ball/spring controllers to prevent spikes and set the boost level, but I am one of the lucky few that for some reason or another don't get boost creep.

 

Boost creep with a stock main cat? That's really odd. I'd say your situation is more unusual than the reverse (having no boost creep without a cat).

Her midpipe muffler is a straight through Magnaflow.

 

With just the intake and catback (with centre muffler fitted) mods, how much power do you think my car can make running on stock boost? Do you think 190-200 hp is normal?

 

No. Abnormal.

 

Isn't it 220 to the wheel stock?

 

The numbers we are looking at are Dynojet. Being down under, you are probably running on a Dynapack, which gives lower numbers -- I don't how the percentage off-hand.

 

The 220s is typical for stock. It can vary a lot from car to car. I've seen 255 RWHP on a bone stock FD after the owner packed the intercooler with dry ice.

 

I got it dynoed with Dyno Dynamics Dynamometer *well at least that's what it said on the printed out paper*. It came up with 189.2 hp ATW. I'm a bit worried with this figured coz the car had just gone through full service (spark plugs,fuel filter,oil filter,etc2). I'm assuming it's either the dyno giving low figures, possible boost leak (2nd this coz i asked the mechanic to inspect the car when i dropped her), or perhaps the centre muffler?

 

189 is ridiculously low. Did you check to see the turbos were still THERE?

Honestly, do the boost leak check as I described above.

 

Dyno Dynamics reads about %15 lower than a Dynojet, which means his 190 ~ 220 rwhp on a Dynojet. That is about 20 hp on the low side for a fresh tuned-up FD with intake and cat-back.

There are many factors that can result in a lower output levels on a dyno....but I would definitely give the car a good look over. Are you sure you're hitting 10 psi, Kuning?

 

The mods you have should provide way more HP than that. Rotaries are the easiest to make power, so boost leak check is definitly #1, but yes, get a manual or electronic boost controller. it'll keep your boost solid even at stock boost level.

I totally agree with the suggestion about upgrading to FMIC, but aside from that, few other things such as Pulleys, Lightweight Flywheel, Voltage Stablizer, and LSD are smaller things (besides LSD), but they'll will definity noticeably increase your WHP.

 

I know what you're saying.. I think my car is retarded or something. I'm running 3" dp, stock gutted cat, and 3" catback. Also have the ebay intake hardpipes. I have my manual boost controllers set so I get a 13-10-13 pattern. I get no boost spikes and I creep to about 14.5psi in 4th and 5th. I put down 300rwhp heatsoaked as hell (intake temps at 130 degrees) at 13psi.

 

Just to help put the Dyno dynamics dyno in perspective...
My S7 got 147rw KW stock standard in shootout mode on the dyno dynamics
Absolutely no mods to the car...18" heavy rims (Robbing power), mildly restricted cat (Blocked) and only running 6psi boost on the secondary turbo (Vacuum hoses stuffed)

147rwkw = approx 197rwhp....

With the 2nd turbo boosting to around 8psi (10-4-8) I got 161rwkw = approx 215rwhp.

Hope that helps with that ultra low Melbourne result..