Dyno doesn't seem right

[johnnyd6404]

So I went to NE Dyno today to test the car out and my # don't seem right. My a/f ratio is off which may be from the use of the sniffer but IDK I only have a few mods but I thought my #s would be better. They seem close to a stock max but I'm still not sure. I've got a SSIM, Injen Intake and Megan Racing Catback I was hoping for 220+ but maybe because it's an auto my #s are lower than expected. Here is the graphs my 1st, 4th and 5th were done in drive and my 2nd in 3rd and my 3rd in 2nd. What does everyone think does this seem right for the mods I've got. Oh btw I've got over 115k miles on it.

[allensteiner]

220+hp... sorry man but your mods won't give you more than maybe 10hp. looks like it's pretty smooth in 3rd gear but your afr looks crazy - how's your o2 sensors? i think the lines should be smoother.your intake and exhaust are overpriced (brand name though ) and won't give you much. especially that doing only the cat back part isn't very beneficial without the headers and a y-pipe. still my 95 doesn't get close to your numbers...

[johnnyd6404]

Yea I probably should be happy with it even tho it wasn't what I was hoping for its a start tho hopfully with a little more work I can reach my goals of 225-230whp. I still find it hard to believe I only gained 7whp over a stock auto and only on ONE pull WTF!!!! Guess I should have gotten there eairler and let it cool down more 210 run was after a 5 min cool down with the fan right on the engine. I think the a/f seems effed up cuz of the sniffer they put in my tail pipe I did a little research and found that with the stock cat the sniffer cant work properley cuz the cat is cleaning all the exhaust ie real lean lookin dyno but who knows maybe thats why my #s are low only time and $$$$ will tell.

[allensteiner]

you can also go to a dealership and get your timing advanced for a few $ - will give you some more hp.

do you have a pic of your intake?

[jltibbs]

Trust me, I had just as much disappointment when I dyno'd my 95 GXE-L. Stock is 190 to the crank. Roughly 175 FWHP on 5MT and 150 FWHP on autotragic. I thought with my I/H/E and pulley that I had to have around 180 to 200 FWHP. Boy was I wrong. 168 FWHP. Sour. The one thing I did see in your dyno that seemed weird to me, the torque number. At your best pull you had 196. Mine was 207. What gives?

[MinisterofDOOM]

HP looks about right for lightly-modded FWHP. Torque might be a little low, but it still pretty close to what I'd expect.

[johnnyd6404]

So I was messin around in the dyno program an came up with this WTF are these my true numbers or what. I'm a total dyno newb so please someone help me out. How can the numbers change so dramaticaly by just changing variables how do you find what the true numbers. I understand that RPM is generaly the variable most use but I still don't understand why it changes so much. As you can see its a 44lb gain vs engine speed. I looked at it with speed vs time and it's the same but 230lbs is at just shy of 120mph which doesn't seem right to me at all.

[jltibbs]

So is this an actual dyno, or one of those programs where it calculates your HP?

[johnnyd6404]

Its the program they use to record the info from the dynojet I downloaded it from the dynojet web site. Its the same program as the first graphs I posted just with different variables. I used time in this one vs RPM in the first graphs I posted.