HeadQuarters 95" HQ-0039 cam : V-Twin Forum: Harley Davidson Forums

ToBeFrank · 02-19-2008, 07:07 PM

'03 Fatboy
HeadQuarters 95"
HQ HVP heads
HQ-0039 cam
10:1
Fatcat 2:1 with standard baffle
Thundermax autotune
2400' elevation
4th gear runs

Overall, I'm pleased with the results. I have a dip between 2000-3000. I monitored the runs in the tmax software and I can see that it went lean from 2000-2250 when he cracked the throttle (14.3-14.8). I'm guessing this is the reason for the dip. I'm going to increase the accel fuel to see if I can fix it. It was rich (around 12) from there up to about 5500. Not really a surprise since the tmax hasn't had a chance to tune those areas in yet. Also, the head temp was only around 180 so the tmat was still adding fuel based on the warmup table. Apparently my bike had cooled off too much while they were getting it set up for the runs.

blue flht · 02-19-2008, 08:21 PM

I have the same cam in my flht, cast flattops, ported heads,thunderheaders and crane hi4,mikuni42. I think you will love this setup our numbers are about dead on.

HDMD88 · 02-19-2008, 11:46 PM

Looks very nice Frank....enjoy that early peak torque.....good job to all!!

C-Cat · 02-20-2008, 01:46 AM

zippers recomends placing the sniffer as far in the pipe as possible when dynoing with a t-max, something to do with the wide band sensors. you might find this info at thunderheart/zipper's website or thundermax pdf files. not exactly sure where i had read this info.

RK05 · 02-20-2008, 08:03 AM

Do you still need to dyno "tune" with the Tmax/auto tune or were you just running it to get your numbers?

ToBeFrank · 02-20-2008, 12:16 PM

Quote:

Originally Posted by RK05

Do you still need to dyno "tune" with the Tmax/auto tune or were you just running it to get your numbers?

To get every last bit of performance out of a build, you should. But I just did 3 runs to see where I'm at and don't plan to get a tune on the dyno. My plan is to do a bunch of monitoring with my laptop while I'm riding, get the AFRs dialed in, and dyno it again. The numbers should improve since the monitoring of these 3 runs show it wasn't optimal.

MaineUltraClassic · 02-20-2008, 06:51 PM

Quote:

Originally Posted by ToBeFrank

My plan is to do a bunch of monitoring with my laptop while I'm riding, get the AFRs dialed in, and dyno it again. The numbers should improve since the monitoring of these 3 runs show it wasn't optimal.

That's what hard about doing a dyno on a bike with an auto-tune system.........we just don't do enough riding at WOT to allow the system to tune itself. So when you put it on a dyno and do a WOT run for peak numbers, they are not going to be optimal since the system is just throwing fuel at it from the basemap.

Steve

C-Cat · 02-20-2008, 10:00 PM

that's pure speculation, i had my 07 dynoed with the t-max and all we did is run it, no tunning and it had as good or better hp (74.4) then any of the stage 1's with race tuner, data log, or the dealer download that came off this dyno and better torque (90.4). not to be critical, but my bike is never driven without running through the gears at least once at full throttle. sometimes a lot more! you can change the base map and throw more or less fuel or timing every 256 rpms and then save your changes by renaming the map, rename the map with the last 6 charactres being the date (02-20-08) leave the other characters as is, the auto tune will then tune to your desired afr.

fxdl raw · 02-21-2008, 01:25 AM

I ran a similar set-up on my Lowrider. You can see the attached link. I was running about 9.75:1 on the compression and a Propipe. I had a little more HP as well as TQ. However, that thing spun up fast and was a real scream. My wrench nick named the bike the "Red Rocket" Man, I miss that ride.

RK05 · 02-21-2008, 08:15 AM

Well, thats good because if I get it that would be the whole reason Not to have to dyno "tune" it.

ToBeFrank · 02-21-2008, 12:30 PM

Quote:

Originally Posted by fxdl raw

I ran a similar set-up on my Lowrider. You can see the attached link. I was running about 9.75:1 on the compression and a Propipe. I had a little more HP as well as TQ. However, that thing spun up fast and was a real scream. My wrench nick named the bike the "Red Rocket" Man, I miss that ride.

I expect to be right around your numbers when I get it tuned in.

ToBeFrank · 02-21-2008, 12:33 PM

Quote:

Originally Posted by MaineUltraClassic

That's what hard about doing a dyno on a bike with an auto-tune system.........we just don't do enough riding at WOT to allow the system to tune itself. So when you put it on a dyno and do a WOT run for peak numbers, they are not going to be optimal since the system is just throwing fuel at it from the basemap.

As C-Cat said... it will be getting several WOT runs.

MaineUltraClassic · 02-21-2008, 04:06 PM

Quote:

Originally Posted by ToBeFrank

As C-Cat said... it will be getting several WOT runs.

I do plenty of WOT runs also, but I'm sure it's still not enough for the auto-tune system to really tune it in as well as my normal riding range.

I love the auto-tune systems.........best thing going in my opinion.

Steve

AZFXSTB · 02-21-2008, 07:22 PM

Quote:

Originally Posted by MaineUltraClassic

I do plenty of WOT runs also, but I'm sure it's still not enough for the auto-tune system to really tune it in as well as my normal riding range.

I love the auto-tune systems.........best thing going in my opinion.

Steve

The Tmax tunes the WOT area pretty well. If you look at the fuel flow area it shows offsets at WOT pretty early in the tuning.

Frank, MAKE Lance let you warm the bike..that Dr Dyno (wannabe) should let you do your thing too. I told them what I wanted and they had no problem. The lean area may be cuz the TMAX wasnt makin any adjustment under 200deg it doent go closed loop till 200 you know that. Still VERY good numbers from that pig...can't wait to run together again...you may have a chance now...

Maybe we can get some seat time this weekend..no kids!!!

ToBeFrank · 02-23-2008, 08:33 PM

Quote:

Originally Posted by AZFXSTB

The Tmax tunes the WOT area pretty well. If you look at the fuel flow area it shows offsets at WOT pretty early in the tuning.

I agree. I did 3 WOT runs and monitored them. First run, learning. Second run, getting close. Third run, spot on all the way.

Quote:

Frank, MAKE Lance let you warm the bike..that Dr Dyno (wannabe) should let you do your thing too. I told them what I wanted and they had no problem.

It was actually my bad. I didn't look at the head temps until I got home. I just assumed they were still hot enough since the bike was fully warmed up when I got there. The next run I do I'll definitely make sure, and I'll also make sure he starts at 2200 instead of 1800.

Quote:

The lean area may be cuz the TMAX wasnt makin any adjustment under 200deg it doent go closed loop till 200 you know that.

After much testing and monitoring, I have a theory on this. I'm going to post it in the TMAT thread.

Quote:

Still VERY good numbers from that pig...can't wait to run together again...you may have a chance now...

Don't tease me... I know you've got those new heads on by now.

Quote:

Maybe we can get some seat time this weekend..no kids!!!

Count me in!