New Dyno Sheet !

[FordFasteRR]

I went to this place next to NextGeneration Motorsports and dynoed on a dynojet machine...

I was surprised that i made a few less HP than on the last dyno machine and i've done a few more mods..

I was able to test the SS fuel tuner and it showed some positive results..

Also, the "HUMP" in the power curve is evidently a result of the fuel system dumping a bunch of fuel just after 4000 rpms.. it goes from 13.1 to 10.x then comes up a little but stays at 11.4 until redline..

so I tested at -4 fuel on the high end and the ratio went up to 12.1 and it made a little more power ... just 2 hp more.. but that is good.. the torque did not change for any of the runs... all 121.x torque...

then I tested with -8 on the high end and it lost .1 hp.. it was also a bit leaner... 13.3 ratio.. so i know that it works best at -4 on the high end with the SS fuel tuner :)


so, best SAE WHP = 130.2 / 121.7 ft.lb/tq

if you attempt to convert this figure to engine HP, just add by 10% or 15% and you are right on the spot... so with .10% the engine HP = 143 bhp SAE.

and with 15% the bhp = 149.5 SAE . I think it would have like 8 more hp with the crank pulley.. but as you all know, I removed it last week so I was not able to show any gains that it has...



Enjoy the pic...

http://www.nitrousworld.com/pictures/dyno_11_04.jpg

[evan938]

not bad...how much did it cost you to do that? i wanna get an accurate number of HP before turbo and after

[FordFasteRR]

i paid $79.50

OUCH :(

[SWortham]

Nice numbers. So now you have a baseline. ;)

Did you know that lighter wheels can affect the results on a DynoJet, but won't affect it on a steady-state dyno? And you have Rota wheels, right? In some ways it's kinda trivial to complain about that, but I wonder how much that affected your results. Anyway, as long as you go back to the same type of dyno after the supercharger with the same configuration otherwise, it'll be a fair before & after comparison.

[FordFasteRR]

i'll be using the same dyno for the blower testing.. :)

update question:

Did you all see how rich the stock fuel system runs ? it dips down into the 10's at 4200 rpms WOT...

holy crap... I can feel that dip when i'm driving... but only when i start off at low rpms... however on the track, its another issue, since I launch at 5000 rpms and never fall below 4000 ....

:)

[CTele02]

so 80bucks for 3 runs or how does that place break it down?

[Gman01]

cant wait to see it with the blower

[FordFasteRR]

well, there is some tricky ****.. i think that you can set it up and pay hourly.. like $100/hr and just run it all you want and tune all you want ...

but I didnt ask..

[CTele02]

Hey if you get to do the hourly run and you have extra time, you should check whats the difference between running the engine with the A/C off and on. I always wonder how much horse power that really takes off.

[FordFasteRR]

I might consider doing that.. but no promises...

anyhow... I would say that the SS Fuel tuner that I have seems to work perfectly ... :)

Here is a pic of it in case you all dont know what it looks like... this is by far the easiest fuel tuner to use of all time... :)

http://www.nitrousworld.com/images/2004-elantra-split-second/P1010143.JPG

in this pic, you can see from left to right:

left: SS ARC 1 Fuel Tuner. it has low and high settings and fuzzy logic for all in-between settings.
middle: SunPro Air Fuel ratio Guage.
right: SS Digital Adjustable Map Clamp.. this is designed to prevent the map sensor from reading boost... (not useful for me at all)...

[2004ElantraGLS]

Hey Ford, where did you get the SS Fuel Tuner? And about how much does it run? I'm assuming this would also work on a CVVT engine?

Axel

[FordFasteRR]

well, I ordered it over the phone, directly from split second... they manufacture and sell the units themselves... they are a US company which is also very cool :)

I paid about 250 for the tuner and like $150 for the digital map clamp.. I could be wrong..... I had all of these items for sale on the marketplace forum a while back, but nobody bought it.. SO i never disconnected it... now i've decided to keep the tuner... the clamp might be on sale soon though...

:)

Also, yes, it will work on cvvt... it is designed to intercept either map or maf signals :) however I have the very basic entry level unit.. they have another unit, i think its the ARC 2 that has low mid and high tuning points... its a little more but has more flexibility and more precision than mine.. :)

[tharptroy]

ford, what do you think is killing your torque like that?

edit: I use the term kill subjectively, its just that on my car with an intake and catback exhaust, I saw about 130tq. was your timing retarded when you dynoed?

[2004ElantraGLS]

Ford, is the Tuner a PITA to install? If not, I may be getting one soon. :)

[FordFasteRR]

ford, what do you think is killing your torque like that?...


9 ft/lb difference in torque is not major between 2 different dynos... However I would like to point out that the torque curve is very VERY lienar with more than 100 ft /lb at 2300 rpms.. that means that I am making consistent and HIGH torque.... I am not worried about this in any way.

Ford, is the Tuner a PITA to install? If not, I may be getting one soon. :)


it's VERY EASY to install.

It took me less than 30 minutes.

All you have to do is patch the 4th wire from the map sensor into it, and give the unit a switched 12v power supply... simple as that. :)

. but like i said, go with the arc 2.. its got more tuning potential than the arc 1... :)

[only1db]

is this the same thing as the safc? say like the apex unit?

[FordFasteRR]

is this the same thing as the safc? say like the apex unit?

well, its not "exactly" the same thing... however it does modify the fuel curve.

It does NOT allow you to set fuel trim levels at any given rpm point... so its just across the board...

the unit has a low and high adjustment..

so ... say that you drop a set of bigger injectors in there... and you want to pull fuel out at low rpms... then you would turn the low knob down until it was at normal air fuel levels... then, if you wanted to have some boost.. you would set the high end to ZERO.. at this point, it will not trim any fuel and your bigger injectors would add whatever their rated fuel flow capacity at the higher rpms...

it is NOT boost dependent... it is simply a map signal interceptor and does not use RPM as a reference point...therefore it may not work accurately on a boosted car if it was used as THE ONLY fuel control device... however on an NA car with lots of NA mods and bigger injectors it would work decently... :)

[Jmontigny]

I would bet that reinstalling the stock exhaust manifold and using a CAI will give you the torque back. Do you still have it in the original ungutted form?

With the stock exhaust manifold I pulled 133 ft-lbs of torque and at 2300rpm I was making 112 ft-lbs torque.

Our HP numbers look identical however.

[evil247]

Hmm my manifold was ported and I made 130-131 tq. and are you sure you were still using the stock manifold when you dynoed? or did you never swap out the manifold period. I can't remember

[Jmontigny]

Hmm my manifold was ported and I made 130-131 tq. and are you sure you were still using the stock manifold when you dynoed? or did you never swap out the manifold period. I can't remember

Sounds like you are talking about the intake manifold. I am refering to the exhaust manifold.

[evil247]

yep missed that part but i still dynoed 130-131 tq with the 4-2-1 header.

[FordFasteRR]

yep missed that part but i still dynoed 130-131 tq with the 4-2-1 header.

what was your exhaust setup at this dyno ?

multi chamber muffler or straight through style muffler ?

did you have any cats in place ? (if so, which one (s) )

[evil247]

2nd cat in place, 2 1/2 inch crush bent piping, straight through AC Autotechnic muffler

[FordFasteRR]

I think that the 2nd cat is what might help to keep the back-pressure high enough to add those extra few ft/lb of torque at the mid range...

When I last dynoed, i had like 12 for ft/lb torque MORE than my current dyno.... and I had a multi-chamber muffler instead of the current straight through that i have now..

I guess the only way to really tell if that is the problem is to swap back to a multi-chamber muffler and dyno again..

:(

[only1db]

thats why some people say that headers are not worth it...because you loose all the low end...dont know....i'm partial to 4-2-1 myself...

[OdessitPashka]

What do you think made you lose so much power? I'd expect you to be over 140whp since had 137 with less mods. Your compression probably dropped... you should check that. How many miles you have on your car?

[FordFasteRR]

My compression is fine, I also use RESTORE engine restorer every oil change and that keeps the compression super tight...

I dont really think that i lost any power....

[OdessitPashka]

well, didn't you have 136 whp a year ago?