You make an excellent point, however, this should be discussed in that thread.

Duke

 

Duke, the stock numbers on the majority of the 4X4's that I had seen was around 205-210, and this was usually with an exhaust. Most of these numbers came from a run just before the supercharger install. I would venture to guess you are closer to that then the 220 mentioned before. I was in the low 200's, like 203 I believe, with the 22" wheels and Roush Exhuast.

Also, I have to agree with the statement of proper fuel tuning will increase your horse power substancially. I watched as Whipple dialed mine in and the power kept going up and up. I'm sure you have a lot more potential there with a proper tune.

 

Hi Duke;

Something don't make sense - you are getting too much power for running that rich....

My admittedly non-professional guess is, the A/F's are off, measurement-wise. or the dyno needs calibration .

I'm basing this on NCSU's runs a while back - he was running 'pig rich' too, but was down on power because of it:
https://www.f150online.com/forums/sh...2&postcount=29

I believe Mike can tell from the raw O2's voltages if the data is skewed of not (?)

And, if I'm all wet (not unusual) and you really are making that power with those A/F's, may hat's off to ya - those are sweet numbers

Cheers
Bubba

 

Yeah I'm going to send my data straight to TP this morning and hopefully he can take a look at it soon so we know if I'm hurting the engine in daily driving.

It honestly could be hundreds of things. We really can't compare my run to NCSU's though as Mike has said a bunch of times that you can't compare different vehicles on different dynos on different days in different climates. You can't even compare them on the same dyno unless the same operator is working the dyno and the vehicles are back to back.

I know and agree that something is wrong. Whether it be the measurements or whatever, but the A/F ratios are definitely out of whack.



05RoushMarkLT,
Thanks for the info! I could of swore too that I read a couple posts that said the 4x4s were actually closer to 205/210 in HP. So in that sense my gains are around 47 HP using 210 as my baseline.

Thanks all, I'll let you know what I find out.
Duke

 

I just called the shop and found out the A/F ratios were measured using a wideband sniffer in the tailpipe. The dyno operator told me he has tested multiple times on the mustang dyno in their shop and shown their wideband sniffer in the tailpipe shows 4/10ths leaner vs being put in the manifold.

I send my information and data to TP just two minutes ago.

Let's see how it goes and hopefully we can pull some more power from the truck without hurting anything.

Duke

 

13 isn't really big time lean. For a N/A motor, that's probably around what you would want anyway. I see about 11-11.5 when at WOT which is good for a F/I motor. The dyno I went to was reading at the tailpipe and when they did my pulls the air fuel went off the chart lean and they kept letting off and saying it's wayy too lean and that I needed injectors and a fuel pump. So I installed my own wideband O2 meter from Innovate and everything is damn near perfect. Reading at the tailpipe on a vehicle with cats is probably not such a good idea for proper readings anyway.

 

It was actually us misreading the charts in relation to throttle in engine speed because the vehicle was in closed loop. Mike explained it in the chips forum.



Hello All,

Well when something doesn't seem right, it usually isn't.

Neil had an idea that I might not have recieved the 3.25" AF1 pipe and rather had the 3.00" AF1 pipe. Well after he asked me to, I double checked and low and behold I have a 3.00" AF1 pipe.

I'm sending Neil the pictures now in an email and then will discuss this with Neil tomorrow.

Quite unfortunate, though history has shown that TP has excellent customer service and fixes *things* that goe wrong.

Duke