my Rsi was 110 BHP when i got 4 months ago, mint and owned by 2 old ladys. Since then ive put a stainless zosrt on, de cated, K&N, Superchip and Power boost valve only to get 121 at the wheel! Should I change some parts?? ideas please guys!!.........and leave out "get a valver" hehe
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- Thread starter RSI-Williams
- Start date
my Rsi was 110 BHP when i got 4 months ago, mint and owned by 2 old ladys. Since then ive put a stainless zosrt on, de cated, K&N, Superchip and Power boost valve only to get 121 at the wheel! Should I change some parts?? ideas please guys!!.........and leave out "get a valver" hehe
Clio 172 cup
wouldnt 121 bhp @ the wheels be about 150bhp at the flywheel? hence same power as a willy? I think not!
I have had on the RR it was done the same day it was chippped! I also have the printout too, ill see cause maybe its at the flywheel I could be wrong, but I need more input guys, ya all know about this stuff!!! Port and polish? fast road cam? ideas!!
BENR
what do you recommend I do then, im thinking maybe the exhaust is not doing it justice, in MAX power a few months back one of the top zorst gave an extra 8 BHP!! what do you think, was also thinking of changin my KNN for a Twister? Also on the road, the filter would not have taken alot of air in so do you tink i lost some BHP there?? its 121 at the fly wheel just looked at my dyno plot graph
well, the only true way to power is doing head work.....the more air you can flow, the more fuel you can add....
so, i would go for the twister as a starter, exhaust is importnat, but only when the std one becomes a restriciton. and i doubt the top exhaust gave 8bhp!!!! haha! no way.
but decent system is a must. i would research and see what the most restrictive part of your engine is, then work on that. a simple cahnge to 1 choke poer cylinder could yeild a decent amount of torque and top end power. but everything you do from now on WILL be expensive.
i can port heads for 20 quid a port....i dont polish the inlets because it is detrimental to fuel suspension and fuel consilidation on port walls as the inertial force of the fuel actually takes it out of the air flow and it collects on the walls.
i can port the exhaust ports....but itll only give a few bhp (2) at max rpm and when the engine is fully prepped.
Ching@iamwasted.com
i will be back in the UK in october if you are interested.
yep, check out the members area, on rolling road results 127bhp at the wheels
http://www.cliosport.net/members/MemberTable.asp?CC=RR
no. 5 on the list
Ben J..
those rr figures (from the rr results page) are totally with the fairies. !
eg - a std 172 with airbox and exhaust section - 160 @ wheels..
absolutely, utterly, no way
those look more like flywheel power !
that would give your vavler about 103-106 @ wheels.
thats more realistic.
Joe.
absolutely, unterrly, entirely, NOT !!!
I am quoting from the earliest club RR day and say the results are bollox !!!
Joe..
A large number of rollers are unaccurate anyway, they are however repeatable and consistant, which is really all that counts when you are trying to get more out of an engine.
i.e before tuning and seting up you had 100bhp and after 106 bhp. You cant be totally sure of these figures, but you can be sure you have gained 6 bhp over whatever it actually was before.
It is a fact that quite often you get a different figure from differnet rollers, it all depends.
I aint got a rolling road near me, but am curious to know what my valver spits out at the wheels. Standard apart from piperX (no ducting so prob. losing some rather than gaining)
Alex M
