1st I wanna give thanx to Roger/John at JAPTRIX for their time/great customer service/experience.

I ordered a set of AAM 3inch DP's/Open Dumps from Forged Performance (great service/fast delivery as always) and i wanted to get installed/tuned so I set an appointment with JAPTRIX. I also wanted to get a baseline dyno to see where i was at on a MUSTANG dyno compared to my previous numbers on a DYNOJET. I also wanted to get a before/after install & tune dyno to see where/how i improved and how far i could improve on my numbers....

The night before I changed my oil (10w/30 Royal Purple) and filter (K&N). A few months before I also learned more about the settings on my boost controller (Greddy Profec E-01). I changed the SET/GAIN to improve the spool and pull harder/faster than the previous settings, but still maintaining the 9psi boost setting! After i did this the car felt alot faster and pulled sooo much better/stronger (proven on the BUTT Dyno). The AFR still stayed in a range of 10.9-11.2.

I then cut out the front grill of my stock bumper to get more air to the intercooler. It felt faster but once again only proven on the BUTT Dyno. I also noticed my AFR did lean out more on my guage but nothing crazy... All in all the car ran strong/hard!!!

So I get to JAPTRIX and right away they get on with the appointent. Roger straps the car down and checks everything before he starts. The dyno gets calibrated and the fun begins!


1st- Dyno... The car runs smooth and then Roger hits it and the car starts screaming and then the car starts to slip on the dyno, so Roger feels it and cuts the run short so he can restrap the car for another run. So they double check everything and look at the computer to see where it cut out at. 416hp/380tq.

Check the Video: 1st run slip
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So on the next run Roger restrapped the car and went at it again with no-slip.. The results were more than we expected.. 454hp/409tq!!!!!!!!!!! WOW... I dont know how much the boost controller/grill changed things but i never saw this coming!!

Check the Video: 2nd run...
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Heres my DYNOJET:


Heres my MUSTANG:



Im looking for my N/A MUSTANG dyno sheet, but i cant seem to find it. I will post it up when i do. I think it was like 240ish or so BONE Stock..

Roger hooked up a laptop and started going through my tune to see where/what was up with the results. He went though it all and said everything was where it should be and I had a really good tune on it (Thankx to Jeremy Tibbs of Performance Factory). He said my timing was conservative/safe. We were all pretty shocked with the results and i was happy to see my tune was were it should be and it was all good. I def give Roger and Japtrix props for pointing out that Jeremy did a good job on my car and they had nothing bad to say about the tune or Jeremy. That alone commands alot of respect when one shop tuner can give a competitor tuner his due props! That says alot about a shop to me!

Now pls keep in mind im still at 9psi (we had to check again after the results as it was a high result). Needless to say we were shocked and happy with the run. The tune was dead on and the car at 9psi just puts out high numbers. Funny thing is before the run i was asking around about good limits for a MUSTANG dyno for a stock block and i was told about 400-410, and Roger was telling me he goes about 420ish or so, and maybe 430-440 on a stock block revup.. My numbers were well past those... The tune was good, he checked for knock,etc.. and everything was good. He took the car for a quick run and said the car is just powerful and the tires were spinning on him.. He said the car feels/drives real strong/good on the street/dyno.

So after that it was time for the DP's/dumps. I also had him replace the plugs. Well he got the car on the lift and started.


Replaced the plugs and talked to me more about the tune, built block, answered my questions and all. Then with the car in the air he noticed how the Greddy EVOTT at the beginning has that small bottleneck opening into the bigger 2.75inch. So we discussed it and a decession was made to have the small opening flared out, for better flow and fitting with the DP's. So another appointment was made for next friday to have my exhuast modified/DP's/Dumps installed.

We talked about the power the car put down without the pipes, and decided to keep the power the same since it was already high and just do a retune to compensate for the new DP's and smooth it out better than what it is now. What a weird/unexpected good day..lol...

We'll I went back for my second appointment to finish my install.. Roger took out the bottle neck of my Greddy EVOTT exhuast and made it 3 inches to mat up with the AAM 3 inch DP's. And also as part of my appointment im glad to say they replaced my passenger window motor and it works like new...





Now on to the good stuff. Roger put the car on the Dyno and hooked everything up. To see where it was at he 1st did a small pull to 5000 rpm. The results were 398hp/420tq. That alone i was suprised as the pull was just to 5000 rpm and no retune.... He then checked the outcome and made adjustments and rechecked everything. Then went on to 5500 rpm, then 6000 rpm, and so on. Each time he would recheck and make adjustments as needed to the tune to compensate for the DP's...

The goal was never to make anymore crazy HP numbers as the car was already putting out high numbers. The goal was to keep the tune safe and get the AFR back down to safer levels. The car on the other hand was just responding very well to the DP's/tune.. Roger dropped the AFR back down from the week before dyno to a safer level, and well the car just kept getting stronger... By the end of the session the car put out a high of 466hp/412tq. In the intrest of getting the AFR at a portion of the rpm rang a little more fuel was added and the end result was 463/415tq... The car is now making more/higher/harder boost throughout than before.




Here the vidz:

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Heres a comparison of my base dyno from last week so you guys can see where the difference was made.



The car sounds amazing with the open dumps. It also feels alot faster. The boost kicks in sooner/harder. I def gotta give my props to Japtrix for install.... And Def props to Roger for the retune. This is all done on a stock block with pump gas @ 9 PSI....!

 

Congrats!!! Great write up and the vids are nice too. It is just a little tough to tell on the dyno charts which was the before and after. (Assuming the higher numbers are after) Maybe you could just identify the greatest difference in performance numbers before DP's and after.


So 407 was your initial Greddy TT tune on a Dynojet

Then you made 454 on a Mustang Dyno w/ Old Downpipe set-up by modifying the programming on your boost controller and opening air flow up front.

Finally you made 463 after the downpipe conversion.
Sweet.

 

Good write up.

Im looking to pick up some open dumps, they sound good.

 

i love my open dumps...get great looks from people on the highway after a pull lol

Tom

 

So that's why my car isn't done yet...

Just kidding.

Congratulations!!!

 

450+ on a mustang dyno?!?! Isnt that way past the safe range for even a revup motor?

 

Well, he probably got some additional hp with the mods he made before getting it on the Mustang dyno, but it seems unlikely that they provided 47 additional hp (IslandZavage, feel free to provide your opinion/nsight on this). Thus, it seems that Japtrix's Mustang dyno may indeed be reading higher numbers than Jeremy's Dynojet. I think that is the point Jeremy was trying to make when he asked me to put my car on his dyno. At least now he has his answer, I think.

AND LET'S NOT GET INTO THE WHOLE SHOP A SUCKS, SHOP B KICKS A** THING AGAIN, PLEEEAAASSSEEEE........ We are only discussing the particular equipment being used (and my previous assumptions about Dynojets may have been wrong if I am understanding IslandZavage's post correctly).

 

tune doesn't matter when the physical limits of rods are passed

anyhow, great #'s. japtrix is still in business, PF isnt, just relocated.

 

I agree.

I certainly meant no disrespect to Japtrix. To the contrary, I am very happy with everyone there, and I know my car is in great hands. Moreover, I have developed new friendships.

Prior to analyzing IslandZavage's post, it was my understanding that Dynojets typically provide higher hp numbers than Mustang dynos, and I even said that in my thread. But if statements that I have made in this forum may have been incorrect, I feel I should state this. The real value of this forum, and others like it, is knowledge that we can gain and use to continue improving on our builds. Oftentimes it is hard to get past the political B.S. that naturally stems from various allegiances, but if we can do so everyone benefits.

 

the Dynojet numbers are before me resetting the boost controller and opening up the airflow. The car always felt good, but i felt that when i was just on wastegate psi it pulled harder than my HI 9psi setting. So i did some research and learned more about set and gain on it and found a deserted back road and spent a few hours testing/adjusting settings. Then i finally found a setting that kept me at 9psi but pulled like a raped ape. I have NO doubts at all that if i get back on a Dynojet it will surpass the 407. The car felt so much more different and faster. So i think if i had these settings from the start my Dynojet numbers would be higher than 407 for sure. It was a night and day difference.

 

Thank you for your insight.

 

wow, sick numbers

any plans to build the motor?

 

makes me want to go install my SGP downpipes......they have been sitting in my shop for months now......hmmm............

 

Im going to build the motor. Not sure when though. Wifey is pregnant and that kinda threw off my time table. But im hoping to be built sometime next year. Not really in too much of a rush. Car is not my DD.

 

I saw ur G up there. very nice. Saw ur plenum too. Cars gonna be a rocket..

 

Not too sure. I honestly went in ready to be humbled by the Mustang Dyno on numbers. I knew it would be higher than a 407 Dynojet comparison as I said earlier, changing the boost controller settings and opening up the air flow helped the car tremendously. The Tune is conservative with timing and they richened it up to be at a safer level than before. The car still put out high numbers. It drives smooth as before only difference is its pulls harder/faster and at WOT the dumps scream...!

 

Congrats on the new numbers. It still looking good. I saw your car there when I was getting my FX dyno'd.

 

Thank you! I'm excited about finally getting the plenum.

Did Roger show you the rat's nest of wiring we have going on? We spent a good part of Thursday working on it, and still didn't get it all done. It's getting close though.

 

That plenum looked real pretty polished. Roger had to stop me from stealing it 3X's...lol

 

I originally ordered an unpolished version. But when Marty (Injected Performance) was at SEMA, he found out that Cosworth had two polished ones available (more expensive of course). I have been waiting for around 4 or 5 months now, so I told him to grab one of them before someone else does. He got it taken care of while he had me on the line.

I have been very fortunate in that EVERYONE I have dealt with while working on my project have been extremely nice, helpful, and have shown nothing short of absolute professionalism. Overall, it has been a very fun and pleasent experience, although I can't wait until it's done so I can quit dwelling over it. I'm now addicted to it and I'm letting it eat up too much of my time.