I know probably most of you would figure this out but.... When installing R&D freelow you MUST rotate the outlet tube to 45 deg down from 90 deg to make it fit properly.. or wait xxxx days for the Riva freeflow kit. Just a word to the wise for the 1300 stage II guys.. Just got back from a local lake with the complete stage II kit installed. A little help on the ECU settings... G-6/Y-5/R-2/RPM-5.5 GPS72 73.2-73.6 4 Passes with 4 bars. Cloudy about to rain and about 80 deg. Note( no k&n flame arrestor / air inlet removedfrom arrestor housing and hooked to right side fresh inlet hose.

[ 05-20-2003, 09:00 PM: Message edited by: dchat1300r ]

Did you install the girdle kit? and was it easy??


Thanks, Daniel.

Yes the girdle kit was installed, only because the local yam dealer (ACTION) said that was the only way they would provide any warranty on the ski.

Wow!!!!!73.6 mph David, i told you that sooner or later your boat would be there, do you remember? Did you install the Riva ride plate also? or only the free flow exhaust, just curious. David, i saw a post from TJ-Race (Tim judge) on wich he explain to board member Yamama from Spain that this free flow exhaust system increase this boat midrange power BIG TIME do you agree with him about this? Thanks Ray

[ 05-20-2003, 11:51 PM: Message edited by: Gprracer ]

Ray,
The ski did pick-up mid-range quiet a bit. The hole shot was also improved.It sounds awesome. I installed the plate and freeflow at the same time and also removed the Riva sponsons and reinstalled the stock sponsons (all the way up). It was the RIVA plate and i still haven`t had the skeg milled off(that`s next).The big difference was adjusting the EFI contoller. Set at Riva recommendations the ski surged at the middle and top end. After a couple of turns of the screw WOW there it went.I hope everyone won`t just install it and go there`s alot to play with there.I still haven`t got the k&n but now don`t` know if I want it. I`ll try and post some pics of the air intake set-up. Might be a little chancy if you play alot with water over the hull, but seems to work great and sounds pretty cool too! Thanks, David

Thanks to the Riva Crew. These #`s are because of you`re work NOT mine!!! Also Thanks to Mark at Riva for all the overnight parts as they arrived!!!!!

Dchat1300r
You said the free flow sounds good. I'm looking to make my 1300 louder. Is it a nice difference sound wise? I have a TDR waterbox on my 991200 and it screams with that pipe on. Did you notice a big sound difference with it, or a little sound difference? Thanks. Mike

1 more thing. Did you put the power core in? Did that make a sound difference? Thanks again.

Great info bro, you make my day. David, your single pipe stage II 1300R boat is hauling *** i can't wait to see this boat next testing with NO skegs in the ride plate:

Ok just for the record, correct me if i am wrong: YOUR SET-UP:

Handling and hull mods:

1)Riva ride plate
2)Riva 2 bars intake grate
3)Riva PPK (pump plug kit)
4)Pump resealed.....???
5)Riva billet prop cone
6)Island Racing solas 14/20 I cut prop depitched to a 12.5/18.5
7)Riva Gp1300R 87mm pump nozzle (replace stock 85mm)
8)stock oem sponsons (all the way up)

Engine mods:


1)Riva high comp. cast heads with girdle kit
2)Riva ECU (settings..G-6/Y-5/R-2/RPM-5.5)
3)Riva power core (replace cat-con)
4)Riva performance pump cone...????
5)Riva reed stuffers.....?????
6)R&D Free flow exhaust
7) stock oil injection (no premix)
8) 93 octane pump gas (4 bars at the dreamo)
9) air inlet removed (no K&N flame arrestor)

Best Top speed...73.6 MPH (with garmin GPS 72)..
Water condition...Glass
temp. 80 deg. air
Humidity....N/A
peak rpms...7220-7240....
Rider weight...215 pounds

[ 05-21-2003, 07:35 AM: Message edited by: Gprracer ]

Riva Crew, thanks for the head up i was not aware of this.

NJGR1200,
Yes, it is a good bit louder and sounds crisp. Yes I have the power core installed, don`t know what kind of difference in sound it made cause I still had the suppression hook-up when I made that mod. This kit has come to me in pieces, as they where released.
Ray,
Yep you got it right. The ski now is turning in the 7220-7240 range.Time to find another 1.4mph. I`ll find it somewhere. Thanks, David

GOOD #'s
7220-7240------------increase pitch, drop those r's and....hold on