RevHigh

I tried a search function but came up empty handed with several attmepts. Any of you C43 guys dyno your cars in various stages of tuning? Stock to wild, I would like to see some numbers if any.


TIA

Wesss

I dynoed my car (C43) a while ago and came up with the approx. numbers.

254 rwhp - Stock w/ no secondary cats
269 rwhp - no airbox, K&N filter direct to the intake

These numbers are from what I can remember.

Simon, if you read this, can you send me the data from the dyno and the pics of my car on the dyno as well.....Thanks!

RevHigh

Thank you!

fangtl

which K&N conical filter did you use? Part #?

99SlvrC43

K&N 33-2183 is what part number i found for the C43. But What is the price? I found some one on ebay selling it for $43 each. Is that right? Sounds too much to me. You need two so thats $86 for a few HP's? Not worth it to me. Anyone else has some insight on this?

Denlasoul

99SlvrC43:

The factory replacements K&N filters can be bought at www.ajusa.com. I got mine for $37.50 I believe. Yes you will need two.

SiLvaC32

15rwhp for under 100 bux... is VERY VERY good. you would spend alot more from there on if you are tryin to add HP for your car.

Jerry

toamend

hang on, you're saying "269 rwhp - no airbox, K&N filter direct to the intake" meaning some kind of modification? Is it driveable in this condition?

I agree, $100 for 15 hp is more than a fair deal, but how about k&n IN the airbox, as intended?

Denlasoul

K&N in the box will get you probably 5hp. It's a good mod to have, but I wouldn't really expect any major gains.

toamend: do you have a 98 or 99 C43? If you have a 98, remove the air intake cover (in your grill). Not to sure if the 99's have the same dual intakes behind the grill.

just saw your sig. anyway, do you have the dual intake ducts behind the grill?

99SlvrC43

15rw-hp???? It's just a filter, It will not add that much
to the RW. the car starts with 302 and a filter will only add on average 5hp and these numbers are at the crank not at the rear wheel. Think back to high school when you learned that no engine is 100% efficient. So there is a formula

Crank HP vs. True Rear Wheel HP

Take crank HP, and subtract 15% and you'll get about True HP at rear wheel. 302 crnk HP x 0.85 = 256.7 RW-HP

The actual formula contains a curve for power loss through gears and there's another curve for power lost in a tire.

So now you truly believe the manufacture when they claim that just a filter will give you 15rwhp? 15rwhp / 0.85 = 17.6 crnk HP? Why then even buy a $900 chip that when dyno give only 21 crnk HP.

toamend

DLS, the 99 has both intakes covered at the grill, but I hesitate to remove them cause I'm worried about water and other nastiness getting up there. I drive in pretty harsh conditions (New England rain/sleet/snow/dirt) so I've gotta be carefull-
WTS

SiLvaC32

i didn't believe that the manufacture's claim, who actually does.. im saying that the figure that the person before me posted SAYS:

"254 rwhp - Stock w/ no secondary cats
269 rwhp - no airbox, K&N filter direct to the intake
"

99SlvrC43

Oh I know bro, but I can also post this

1999 Geo Metro 300 rw-hp stock w/ 92 octane gas. A post is all it is "a post" In order to get results it must have been tested so therefore you should have a "slip" / a dyno chart or something. Please scan and present that, cuz those numbers are way bogus. I just finished 3 yrs of customizing the preformance of my import car. And after dropping thousands of dollars to it I learned alot that what ppl claim is never what the dyno sees. I remeber when I first started with performance mods, i was boosting my hp so high that i was laughed at. I was shocked when I took it to a dyno and saw the real results.

SiLvaC32

yea.... i know~ i was like that when i first started modding my bimmer. usually intake air filters won't give you more than 1-2 rwhp. that i am aware off... just the thought that MAYBE on the V8 there can be more to squeeze out of led me to believe his results.

Jerry

Sander

I did dual K&N's, in a stock airbox, but I cut and sanded out all the ribs in the top lid to smooth the airflow. I also removed the covers for the air inlet tubes. I haven't dyno'ed the car, but I don't think 15hp on the top end at 6500rpm would be unrealistic given how restrictive the stock paper filters and airbox are.

This isn't so much a statement about K&N filters as it is about how poor the stock set-up is. Other than that, there is nothing worth doing to these cars, but from the seat of the pants with my mods it definetely feels better. I even get comments from other C43 owners about how strong it runs.

Before all your glamour-***, boulevard cruisers start getting your panties in a wad, bow down to the OTC!

99SlvrC43

Post a picture of what you did, thanks

JAYCL600

Removing the air intake tabs within the grill, even in the harsh NE area, wont be much of an issue, you wont any water up in there trust me, I live in the DC area and the first thing I did was to cut the tabs out and get K&N filters. We both have the same intake setup.

toamend

Popping those tabs out still scares me, but I'm glad to know that you've done it without any ill effects. This is my daily driver, and some days I wonder what I'm doing drving this car in the **** weather around here! Most of the cars that I've owned have had a restrictive plate like that and I've always wanted to rip them out, it just seems like they must get in the way of proper airflow-
WTS

Denlasoul

I know this post isnt actual rwhp, but I just ran against a S55 and he nerver got past my front wheel well. We ran about 1/8 mile. I'm sure he would have eventually beat me, but my 4-3 held its own. I am very happy.

Full story is in Kill Stories

Brandon @ Kleemann

C43 tested on a Mustang dyno, stock. Dyno calculates powertrain losses through a decel cycle in N. Customers name is white-out at his request.

Brandon @ Kleemann

C43 after KLEEMANN SC:

JAYCL600

are these figures RWHP?

Brandon @ Kleemann

No- they are crank numbers. A Mustang dyno calculates the powertrain loss during a Neutral decel cycle after the roll on power test. As indicated by the stock dyno there was a 2% error from the MBZ published stock HP of 302. Very accurate.

JAYCL600

I appreciate the calrification. I have a friend who may be interested in the KLEEMANN upgrade on his 98 C43. I am curious if you have pricing on the W211 E55 upgrade yet?

Brandon @ Kleemann

At the moment I do not. I will make an announcement on the forum when everything is confirmed.