My day at the Dyno - SRT Forums

Back-n-Black · 02-18-2006, 06:55 PM

Went down to Intec today to see what the car is putting out now after some new parts. Last dyno was 247hp, 275tq i believe those where corrected numbers. I made four runs and the fourth one was the best, i am sure if i had more money to blow i could have tuned a little more out of it.

EDIT:Aganst my better judgement i reset the PCM this morning and spent 3 hours driving around boosting so the PCM would settle down.

Runs .003 and .004 are runs with the PTPerformance FTM turned off. Just stock fuel control. Runs .005 and .006 are with the FTM turned on and the a/f target set to a very safe for my setup 11.7 afr. The boost was the same for all runs 24 spike falling to 18-19 at redline. Downpipe was open, and water injection is an m4 nozzle set to come on at 6-8psi. I run -20 degree window fluid with one bottle yellow heat, should be close to 50/50 maybe less than 50% meth. Corrected and uncorrected numbers both posted for those who like to see both. EDIT: all runs where done with 92 octane pump gas with no additives or octane boosters.

I am not overly joyed by the numbers, but all and all not bad for as little money as i have into it. I was hoping for 280+ corrected, but that will have to be another day.

Mods that matter:
Mopar stage 1 PCM
stage 2 WGA
Needswings V5 open downpipe
Needswings MICBC .......even though i didn't need to use it.

PTPerformance FPR
PTPerformance FTM
Drop in filter
NGK's gapped at 40

Enjoy. Flame. Post. Disscuss.

Corrected.

Uncorrected

Back-n-Black · 02-18-2006, 07:02 PM

Just for compairison here is my last dyno. No wondering what the spike in the middle is. lol ICMBC. lmfao Just looking at this graph makes me laugh.

Remax Realtor · 02-18-2006, 07:04 PM

Why not back the boost down and aim for a flatter torque curve? That initial spike will spin the tires and probably cause a slower time, or have a better chance at snapping an axle. I could be off but i dont see a reason for a 375-400tq spike for 750 rpms.

Back-n-Black · 02-18-2006, 07:14 PM

Quote: Originally Posted by Remax Realtor

Why not back the boost down and aim for a flatter torque curve? That initial spike will spin the tires and probably cause a slower time, or have a better chance at snapping an axle. I could be off but i dont see a reason for a 375-400tq spike for 750 rpms.

WOW

I have never had wheel spin on a dyno with my srt4. lol
Did someone spray wd40 on the rollers last time you went to the dyno? lmfao

Point taken, but don't matter for dyno numbers.
Randy

COY · 02-18-2006, 07:22 PM

That is alot of boost. Are you sure your not pulling timing? You should get stage 2 and cams. Good for 400hp.

Back-n-Black · 02-18-2006, 07:28 PM

Quote: Originally Posted by COY

That is alot of boost. Are you sure your not pulling timing? You should get stage 2 and cams. Good for 400hp.

LMFAO ya 2 and cams.........400 ha ha ha

I did a run the other day with the data logger and it showed 35degrees in the mid RPM's and 30 at redline, so i am pretty sure i am not pulling much timing. I am gonna up the w/i nozzle to an m5 to help, but if you just gave my that intercooler off your car that would be a great help.

There is always room for improvment on any car. I got a long way to go man.

Randy

srad2drag · 02-18-2006, 07:34 PM

I like the way you posted SAE and uncorrected numbers......It makes it easier for most folks to understand the difference in the two......

Also I second the stg2 and cams you will be right at 400 hp

Vector · 02-18-2006, 07:37 PM

got map clamp

Remax Realtor · 02-18-2006, 07:38 PM

Quote: Originally Posted by Back-n-Black

WOW

I have never had wheel spin on a dyno with my srt4. lol
Did someone spray wd40 on the rollers last time you went to the dyno? lmfao

Point taken, but don't matter for dyno numbers.
Randy

its called wheel spin on the street

If you enjoy your 400tq spike then keep on trucking. I would rather have a smoother tq curve rather than spin my wheels or snap an axel. Maybe you run slicks on the street?? I guess I dont care enough for peak numbers, and would rather have better drivability.

Back-n-Black · 02-18-2006, 07:49 PM

Quote: Originally Posted by Vector

got map clamp

Yes and no. Yes the FTM clamps the map voltage, but it is not a set voltage clamp, it is progressive based on a/f ratio. I don't know all the fine details, but it works great.

Randy

Back-n-Black · 02-18-2006, 07:54 PM

Quote: Originally Posted by Remax Realtor

its called wheel spin on the street

If you enjoy your 400tq spike then keep on trucking. I would rather have a smoother tq curve rather than spin my wheels or snap an axel. Maybe you run slicks on the street?? I guess I dont care enough for peak numbers, and would rather have better drivability.

Thanks for the flames. Good stuff.

Slow Poke · 02-18-2006, 08:08 PM

wow !!!!!

GREAT #'s randy !!!!!!

now you just gotta get that power to the ground...

Back-n-Black · 02-18-2006, 08:23 PM

Quote: Originally Posted by Slow Poke

wow !!!!!

GREAT #'s randy !!!!!!

now you just gotta get that power to the ground...

Thanks Mitch. I got a lot of catching up to do to catch you man.

lol Gonna need a 50lb bottle and slicks the size of farm tractors wheels. lmfao
Randy

thepowertowin · 02-18-2006, 08:27 PM

You require stage 3.

lunchbox660 · 02-18-2006, 08:31 PM

too much boost, too little fuel, thats why you are getting such massive TQ and then it toally drops off the chart right away. lower the boost or increase the fuel. it will drop your peak numbers, but it will give you an OVERALL increase in power across the board.