should have kept all the customers replys I got past 3 years ,regarding their
Airbox results ,this
would have been It's own Advertisement, if I'd have dropped them simply here. So here are some of the few
remaining comments I was able to find ,from customers,who have mounted the Airbox on their RC51
(SP1 / SP2)........
The latest Airbox report,whole thread here: More Thorsten airbox dyno results
|Here you go,
honest-to-goodness back-to-back dyno test of the Thorsten airbox. The
bike, a SP2 with high-comp pistons, PC3R, 10.8k ECU and Yosh full
system. The dyno, a notoriously low-reading Dynojet 250. The atmospheric
conditions, pretty crappy. I started off by dynoing the bike with the
complete stock airbox in place, with filters and a good map. I made a
few warmup runs, then stabilized the coolant temp at 195-ish degrees and
made 3 pulls. They all read about the same, run 003 is shown. Then I
installed the Thorsten airbox, which is fiberglass with kevlar
reinforcements. (pretty much bolted right up, btw, took maybe 40 minutes
at the most but the bike was already stripped of all bodywork, etc) Then
with coolant temps held at 195-ish degrees again I made some more pulls.
It was lean, yet picked up some power. It was near the end of the day
and I didn't have a lot of time to tweak the mapping, but I made some
gross changes with the buttons on the PC3R and the result is shown in
run 009. Not too bad, a 5hp gain, and it is still a bit lean. With more
time spent on the mapping I feel another 1-2hp will result. Overall I am
quite happy with it already, nice job Thorsten.
AHRMA Battle of the Twins #58
AMA Pro Sports Expert HW Twins National #1
Message edited by: hordboy on 12/04/2003 21:28:08
Hi Thorsten,hope everything is ok with you.
I have to admit, your airbox made a very nice affect, I'm usually walking away all of my friends spīs with similar setup but without your box.
Attila from Hungary
dynoed today at willowsprings with thorsten airbox at l
and l dyno ,altitude or elevation is higher than when i dynoed with him before.
before 126.5 -today 131.7 with new airbox arco gas. will tune motor to box in 1 week then i will dyno at my friends shop to see if his dyno reads high.
man all i can say is ,it sounds mean as hell you can here the throttle bodies really loud now and it makes this incredible grow when you twist the throttle. this is how it should really sound.have'nt dyno it yet needs to be adjusted but it comes up so easily now. twist the throttle and it on a wheelie. will dyno it on thurday to put all the rumors to rest, we'll see if you get a 10hp gain as some have stated, but if not i lost almost 6lbs on the front alone not bad. if one was to do both airbox and carbon fiber tank that would be a total of [6lbs airbox and 7.5lbs tank]13.5 lb wieght loss on the center of the bike. i may swap to a 2002 computer from my 2000 ,i'm wondering would it make a difference with my 02 throttlebodies,
yo thorsten the bsox was very easy to install and i'm very happy with your quality and workmanship . only had to drill one hole which you put the x so that was great and it fit perfect. i had
the other airbox from streamline carbon in england and i have to say that thorsten's box is plug and play , no drilling its worth the extra money.
Get one! Fit one! Use one!
Bl**dy marvellous it is. Even with the stock exhaust pipes, the engine was pulling so much more powerfully, so I reckon it would be even better with some free flowing exhausts. On Zolder today I was pulling huge wheelies over crests where before the front wheel would hardly come off the ground. Lots more grunt and a great noise from the engine with lots of induction roar. It sounds much more like the bike that Edwards rides.
My map was OK, but it was still popping and farting a bit going into the chicanes, OK, read horrible backfires. Worst of all, in qualifying this morning, one of my exhaust cans fell off even though everything had been checked and tightened as usual. It was already a bit bent up, but I'm definitely going to replace it with one of those clever 2-1's that Thorsten is selling (5.8Kgs for a full noise restricted system!).
Anyway, I broke my PB on the circuit today by 1.1 seconds, had a guy blow an engine right in front of (and snapped his chain) and I got covered in oil - could hardly see where I was going and thankfully they red flagged us one lap later so I could clean up (4 hour race today). Overall, we've finished 6th in the championship out of about 40 teams. Bye bye SP-1 until next April I guess. Away in London until Thursday night, so any questions I'll answer when I get back. Cheers.