Here is my stock dyno chart. Notice the almost perfect a/f ratio (richer at peak tq and leaner at peak hp - not much to be gained here)!

 

And here is a dyno going through 1,2, and 3rd gear. Notice the effect the different gearing has on the curve. If we could dyno in the proper 1:1 gear (4th) we we probably see 5-10 more hp/tq on the dyno.

 

And here is a dyno going through 1,2, and 3rd gear. Notice the effect the different gearing has on the curve. If we could dyno in the proper 1:1 gear (4th) we we probably see 5-10 more hp/tq on the dyno.

Thanks for the analysis Z !

Dynoing in third your still just above stock rating... once again showing Nissan's most conservative numbers...

If the dyno was 1:1 it would appear to be above stock claims.

Interesting your at 272 and 340 running through first three gears...

 

Interesting your at 272 and 340 running through first three gears...

Those are the shift spikes (we just ran it through the gears). Actual peak numbers are on the dyno sheet above it.

 

Thanks for the analysis Z !

Dynoing in third your still just above stock rating... once again showing Nissan's most conservative numbers...

If the dyno was 1:1 it would appear to be above stock claims.

Interesting your at 272 and 340 running through first three gears...

Are those spikes what you based your numbers off of when you dynoed? Its funny they are very close to your numbers.

 

Are those spikes what you based your numbers off of when you dynoed? Its funny they are very close to your numbers.

They are aren't they...while the torque shows a spike in the beginning the horsepower peaked gradually...http://www.titantalk.com/forums/attachment.php?attachmentid=6283

 

For you dyno analyzer's out there, here are my three dyno runs together. Runs 2 and 3 were done back to back, while there was a 5 min break between 3 and 4.

 

The f150's dyno in the 250 range as well. Nissan must not be underrrating the 5.6 like some have speculated.

 

Here is my stock dyno chart. Notice the almost perfect a/f ratio (richer at peak tq and leaner at peak hp - not much to be gained here)!

Interesting, many who dynoed with a stock truck previously were getting ~256 Hp and ~300 lbs torque. While your results are down 10 Hp your torque is outstanding.

Didn't you have some mods ealier? If so, you would had taken them off for a stock rating. By doing so, perhaps the computer had not adjusted itself properly for the original stock items when you had the dyno. Just a thought.

Have a good one.

 

The f150's dyno in the 250 range as well. Nissan must not be underrrating the 5.6 like some have speculated.

The majority of the ~ stock numbers for the titan here, were 256 Hp and 300 ft/lbs of torque. With a 25% driveline loss, that's a flywheel rating of 341 Hp and 400 ft/lbs of torque. Compared to Nissan's under rated 305 Hp and 379 ft/lbs of torque specification, the truck has much more power than it was rated.

The dodge Ram Hemi dynoed at 261 Hp and 288 ft/lbs of torque here. It's rated by Dodge as 345 Hp and 375 ft/lbs of torque. The Titan is only shy by 5 Hp and up 16 ft/lbs of torque. It seems the Titan Endurance 5.6L DOHC engine is grossly under rated.

Have a good one.

 

The f150's dyno in the 250 range as well. Nissan must not be underrrating the 5.6 like some have speculated.

Hmmm, a point could be brought up that the dyno #'s aren't as accurate as they could be due to not be sampled in 4th (1:1) as Z pointed out. The actual numbers should be higher if sampled in 4th and not 3rd.

Also take Z's 247 and do a drive line loss of about 20%-25% and your at 308.75 HP. HP is pretty close however consider not being sampled in 4th(1:1) as I mentioned above and torque of 397. Nissan says 379. That's almost 20 foot pounds higher than Nissan...

 

Hmmm, a point could be brought up that the dyno #'s aren't as accurate as they could be due to not be sampled in 4th (1:1) as Z pointed out. The actual numbers should be higher if sampled in 4th and not 3rd.

Also take Z's 247 and do a drive line loss of about 20%-25% and your at 308.75 HP. HP is pretty close however consider not being sampled in 4th(1:1) as I mentioned above and torque of 397. Nissan says 379. That's almost 20 foot pounds higher than Nissan...

Well iknow my titan is underated w/only an intake & exaust i dynoed 289rwhp that 360hp...My dyno is on my site

 

After dyno-ing mine today, the shop there told me that the quickest way for me to gain 15hp is to go to this other shop. They routinely see a 15hp difference between dynos and both are the same model Dynojet.

 

Well iknow my titan is underated w/only an intake & exaust i dynoed 289rwhp that 360hp...My dyno is on my site

That's been my sediments all along. As it's already been pointed out if you take the average stock dyno this is shown to be the case average...

 

After dyno-ing mine today, the shop there told me that the quickest way for me to gain 15hp is to go to this other shop. They routinely see a 15hp difference between dynos and both are the same model Dynojet.

Glad you finally made it...

You know I'm gonna ask- :hungry:

Any NOS runs?

 

Any NOS runs?

Check my sig - and the dyno sheet on the sticky.

 

stock f150's dyno at 250? all dynos of 2004 f150's i have seen have been around the 210hp range 210-220 not 250 my friend :cheers:

 

Didn't you have some mods ealier? If so, you would had taken them off for a stock rating. By doing so, perhaps the computer had not adjusted itself properly for the original stock items when you had the dyno. Just a thought.

Have a good one.

Nope, never had any mods...yet.

 

And here is a dyno going through 1,2, and 3rd gear. Notice the effect the different gearing has on the curve. If we could dyno in the proper 1:1 gear (4th) we we probably see 5-10 more hp/tq on the dyno.

OK, so who's gonna be the first to dyno in 4th gear, once we have a way to remove the speed limiter?

I agree, you would then be able to dyno in 4th, but I wouldn't want to do it with stock rear tires due to the speed rating. To see the high end in 4th, look how fast these trucks will be doing on the dyno:

2.94 ratio:
3-4 shift at WOT happens between 110-116
4-5 shift at WOT happens between 155-161

3.36 ratio:
3-4 shift at WOT happens between 95-102 mph
4-5 shift at WOT happens between 147-153 mph



Maybe I'll keep my stock XE rims when I upgrade, and throw on some stock size tires with a much higher speed rating for dynoing in 4th.....someday??

Thanks, Z for posting your dyno results with your truck going thru the different gears. Def show the affects that gearing has on a dyno.

 

> OK, so who's gonna be the first to dyno in 4th gear, once we have
> a way to remove the speed limiter?

Is there one?

> I agree, you would then be able to dyno in 4th, but I wouldn't
> want to do it with stock rear tires due to the speed rating. To
> see the high end in 4th, look how fast these trucks will be doing
> on the dyno:

This isn't a concern. Speed ratings are based on driving at that speed for one hour straight. You will not be doing it for long at all.

> 4-5 shift at WOT happens between 155-161
> 4-5 shift at WOT happens between 147-153 mph

This is why a question a speed limiter. You are pulling these figures from the Nissan FSM and if it couldn't do those speeds it wouldn't list them.

> size tires with a much higher speed rating for dynoing in 4th.....someday??

I will be dynoing my truck eventually to get a baseline and to test an intake that is going to be released soon. We believe we have figured out how to get 4th gear. Unfortunately we won't be able to lock up the torque converter. But it will be as accurate as possible.

 

> OK, so who's gonna be the first to dyno in 4th gear, once we have
> a way to remove the speed limiter?

Is there one?

> I agree, you would then be able to dyno in 4th, but I wouldn't
> want to do it with stock rear tires due to the speed rating. To
> see the high end in 4th, look how fast these trucks will be doing
> on the dyno:

This isn't a concern. Speed ratings are based on driving at that speed for one hour straight. You will not be doing it for long at all.

> 4-5 shift at WOT happens between 155-161
> 4-5 shift at WOT happens between 147-153 mph

This is why a question a speed limiter. You are pulling these figures from the Nissan FSM and if it couldn't do those speeds it wouldn't list them.

> size tires with a much higher speed rating for dynoing in 4th.....someday??

I will be dynoing my truck eventually to get a baseline and to test an intake that is going to be released soon. We believe we have figured out how to get 4th gear. Unfortunately we won't be able to lock up the torque converter. But it will be as accurate as possible.

The speed rating I was referring to was the rating of the oem tires, not the capability of the truck's speed.

 

The majority of the ~ stock numbers for the titan With a 25% driveline loss, that's a flywheel rating of 341 Hp and 400 ft/lbs of torque.

Have a good one.

That's a hefty driveline loss. I've never heard of a shop useig more than a 20% loss and most using a 15%. If the drivetrain is as efficient and consistant as many say, why the high DT loss?

S.O.

 

That's been my sediments all along. As it's already been pointed out if you take the average stock dyno this is shown to be the case average...

AS I understand it, ther eis no "average stock dyno" The dynojet and Mustang dynos' will read the same car and be quite differant. As I understand it the mustang dyno is more pessemistic in it's #s than a dynojet.

I guess the best course of action is to be consistent in the model of dyno as well as the actual dyno and person running it to eliminate varitibles.

S.O.

 

After dyno-ing mine today, the shop there told me that the quickest way for me to gain 15hp is to go to this other shop. They routinely see a 15hp difference between dynos and both are the same model Dynojet.

In building motorcycles, we see this all the time. Dynos are only good for measuring changes and tuning, if they have the a/f ratio.

 

AS I understand it, ther eis no "average stock dyno" The dynojet and Mustang dynos' will read the same car and be quite differant. As I understand it the mustang dyno is more pessemistic in it's #s than a dynojet.

I guess the best course of action is to be consistent in the model of dyno as well as the actual dyno and person running it to eliminate varitibles.

S.O.

What's going on... That's what I was saying after I had a little run with an unmarked police car..."SorryOciffer" :crying: ...no I wasn't drunk :lookaroun

I was referring to the average stock non modded dyno here at Titan Talk. As far as I know everyone here has dynoed with Dyno Jet so far. There is going to be a "margin of error" (difference) between dynos.

Good point on the variables, model, actual dyno, person running it. In an ideal world it would be nice to all use the same dyno, operator, ect.