Ok, I see it now. Under 14 is good. Not great in my opinion, but good. That a/f is probably all that can be hoped for with the JRSC out of the box. What did they set your fuel pressure and your btc at? And why are you disappointed?
Originally posted by BoYgUaN o no on the paper it barely touches 14 or even go over
The fact that it's close enough to 14:1 at that low of an RPM (where you'll be spending most of your time) is bad enough.
I had to take a straight-edge against my monitor to finally figure out what ratio the car's running at, and it's nowhere near 12-13:1 until redline.
Looks like a typical lean JRSC dyno, unfortunately. Well, at least we know you did a great job on the install!
It's hard to tell by the dyno if you're belts are slipping. The torque curve just doesn't drop so fast. If you're positive about the screeching/squealing, you'd also be able to confirm it by a noticeable drop in boost pressue on your boost gauge. Tightening them up might bring you up to the ~220whp range. Still won't do anything about the lack of fuel, though.
i think those are good solid numbers for your setup.
proper management of fuel and timing would probably yield another ten horsepower and a safer setup, but you're looking at more than a thousand bucks unless you cheap it out big time.
just enjoy the car for a while, don't touch anything, and hope your pistons stay in one piece. :knockonwood:
How long did you have your JRSC on before the Dyno? you may want to try to tighten up all your belts a bit, the SC belt and the serptine belt. I got a good increase after doing that. Good Luck bro!
i had it for 1 week or so
i tightened the belts already once, while dynoing they werent slipping. i just noticed it last night. it was only during the way upper rpms like 5.5+ or even higher
when i am boosting i cant tell imma jjust tryin to hold on
so you guys dont think the a/f is ok?
i think it's too lean in the midrange. it looks just about exactly like mine did. almost everyone who has been boosting a honda for any time will tell you that 14.0:1 non-intercooled at full boost is too lean. it's really quite puzzling why some users with the stock kit get a nice fat a/f and some are lean.
that said, it's pretty common on the jrsc. not a lot to do about it unless you want to spend a lot more money and possibly have a lot more problems. you'll probably get more power, incidentally, at 12.5:1 than 14.0:1. *probably*
what did lawrence say? when he dynoed mine, he said "if it was my car, i wouldn't drive it like that."
Quote:
Originally posted by BoYgUaN i had it for 1 week or so
i tightened the belts already once, while dynoing they werent slipping. i just noticed it last night. it was only during the way upper rpms like 5.5+ or even higher
when i am boosting i cant tell imma jjust tryin to hold on
so you guys dont think the a/f is ok?
i have your exact same setup, except dc ss vs the ceramic hehe. I got 222whp and 193tq. I don't know why i have so much more tq than everyone else> i'm guessing its a restrictive exhaust system. Probably my clogged cat and muffler. The only difference is I have a vpac thats set at 3500rpm. if you want to buy it let me know, i'm going with a custom fuel setup and vafc so i don't need it anymore. My air/fuel looks just like yours if not as lean at teh end.
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Memories: 257whp & 207wtq @6psi
I quit boost!
ok I'm confused. I understand that you are having tuned. What are they adjusting? The A/F screw that came with the jackson kit..... what else?
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Bottles are for babies, real men get BLOWN.
'97 SH, JRSC, DC 4-2-1 headers, Greddy EVO, AEM CAI, Autometer Boost and A/F Gauges, CM flywheel, and stage III clutch.
i would try to get the a/f's to 12:1 whenever u are boosting....12.5:1 max....running lean a/f's with forced induction will lead to a toasted motor and time for a rebuild
Those numbers aren't bad at all especially the Torque being 183 already without much tuning. With further tuning you can get even higher numbers. I would be very happy if next spring I can put out numbers like that
Originally posted by TUNED_LUDE_SH With further tuning you can get even higher numbers.
That seems to me to be the misunderstanding about the JRSC. BoYgUaN is "fully tuned". There are only two things a lude with the stock JRSC kit can adjust: the fuel pressure and the boost timing controller setting. He has already had that done on a dyno with a wideband O2 sensor. There is no room for "further tuning". To be able to tune the JRSC lude anymore, one would have to make some fuel system and engine management upgrades.
He would need a different management system like a Standalone to be able to do further tuning which will gain him more power. I have a friend with a JRSC prelude and he origionally put out 214whp but now puts out 229whp with a different fuel management and upgraded injectors.
my car will be going back to stock during xmas and the jrsc kit and other mods for sale
tooo much agrivation with this jrsc stuff
i miss my stock lude
one question
how can i check if my lude is still good?
compression test right? that will tell me how strong my motor still is??
MITE