Here is a close to final tune of the APS TT beast.Our set up:
APS TT kit (base kit)
CJM return fuel system
720cc injectors
CP 8.5:1 pistons
Pauter rods
ARP fasteners
OEM headgaskets
Ferrea valve train (stock size)
full race port and polish of heads and intake runners by Headgames
3.5" down pipes
3" exhaust
UTEC
APS plenum
OEM block (non sleeved)

Here is the conditions;
Outside temp : 89.2
Humidity: 51%
Baromiter: 23.9
Intake temp: 89.8
Dyno dynamics corrected to read Dyno Jet #'s 1.13
Atmospheric correction applied
Sunoco 93 octane gas

And the verdict....673whp at 12psi of boost pressure.....We were simply amazed and did not believe our own numbers, we did like 8 dyno runs and changed the Atmospheric corrections each time and made little difference.The Intake temp probe was in front of the intercooler for some pulls and some pulls we put it on the floor to eliminate the fudge factor of overcoorecting the intake temp when it touches a hot surface..
We feel the numbers are very accurate, since we did 490 with this car before the heads and cams and exhaust, and just minutes before we did a stock block APS TT kit at 398-408whp variances.
This week we will tune for some 108 or 112 octane fuel and also do some comaprative dynos on a local Dyno jet just to shut all the doubters down. We plan on being over 700whp uncontested and undisputed, with all the supporting evidence to thwart off the Trolls..lol



MRC MOTORSPORTS LLC.
Home of the 673whp 560TQ beast form the East! @12 psi on 93 octane..More to come...

YOUR VQ35 SPECIALISTS AND #1 UTEC RETAILER AND TUNER IN THE COUNTRY!
WWW.RACEMRC.COM
732-251-8200
Sales@racemrc.com
AIM: SALESMRC

 

hey man!!! nice numbers.... you cant mess with florida though... oh just wait a couple weeks..


i want to see some track times


what good is 670hp if you cant put it down??

 

Nice #'s Julian.

Is this your car or Jason's? That thing must be a beast!

 

4500+ rpm's of FLAT torque curve. Fantastic tuning julian

 

+1 very nice torque curve, indeed.

 

nice

 

What Downpipes and exhaust are you using? Just currious, in the market for a similar set up for the exhaust.

Great numbers man, whats your plan to plant that power?

 

awesome numbers Julian

 

 

Those are great numbers. My tq curve looks like that just smaller numbers. Looking foward to see you in the 700's. I guess you'll need a cage for the track now.

 

Sick. nice job Julian, Cant wait to bring my car in.

 

Wow all that power and with just 12 psi? Thats even with that compression as well.

 

and non sleeved at that! Is that safe? Well nothing is really all that safe at that level but ya know what i mean

 

Actually the boost level is fairly low, so headlift and cylinder pressure should not be an issue. In fact, I have yet to se a stock non sleeved block that has failed by itself.We have all seen rods snap and go through the block,but has anyone cracked a sleeve yet? With proper tuning and ignition timing this motor should make 750-850whp with race gas at about 14 psi.
What most shops do is cram boost into the motor and make power,while at the same time increasing combustion chamber pressueres and temperatures. What we did was work on the flow and efficiency of the motor to make the HP with less boost. Thus creating less strain on the motor in theory. Only time will tell..

MRC MOTORSPORTS LLC.
Home of the 673whp 560TQ beast form the East! @12 psi on 93 octane..More to come...

YOUR VQ35 SPECIALISTS AND #1 UTEC RETAILER AND TUNER IN THE COUNTRY!
WWW.RACEMRC.COM
732-251-8200
Sales@racemrc.com
AIM: SALESMRC

 

What were the actual numbers? Not the dynojet like numbers...

 

585 Dyno Dynamics uncorrected whp

 

I was really wondering about this. You are correct about ppl and how they just up the boost! no one seems to mess with timing much. Can you not get better gains with better timing than just upping the boost? I kinda had a similiar question in another post about timing, instead of just upping the boost. Anyways i don't want to hijack the thread but that is some amazing power at that boost level! nice too see that you are using the OEM head gasket as well. Can't wait to see you in the 700+

 

Well timing on a boosted car is crucial..My theory is,and I learned this from Jermaine at TURBO XS who has taught me ALOT about tuning, if the car does not make power with added timing, then leave the timing out.Why run more timing than you need to make power and come closer to detonation?
Actually the timing curve on my car is VERY low some points only 10-11 degrees of timing, this of course would change with higher octane fuel, which would burn slower and allow me to run a leaner A/F mixture and more timing before knocking. Remember, the most power is made at the verge of knock! But there is a fine line on must walk..
I would say we made a majority of the HP from the head flow and upper intake we had ported along with the cams and exhaust.The motor is so efficient now it makes more HP at 12 psi then it did before at 14 psi with more timing..The flow characteristics are unreal..

 

Thanks Im actually surprised to see MRC use a dynojet like correction factor. Reason being I remember a post few month sback with a guy who claimed 314whp NA with stock cams. We all-including Jason@MRC flamed the guy and the shop for making other dyno's read like dynojets via corection fctors to "impress" people. Ive always respected MRC, the numbers you put out on your APS TT car, the longevity you ran it for, the track times and the no BS truth. IMO, to see you guys now posting the numbers with a dynojet like correction is just Regardless the car is sick, I cant wait to see some track times.

 

Yeah, the only reason we did was because the majority of the people on the boards live and die by DynoJet like numbers. Also if I do recall the 314 whp car never went to a real DynoJet to compare and the thread died. We will however be going to a real Dynojet in the next week or so and post up comparative numbers,like I said the thwart off all the TROLLS.If our numbers dont match up, then we will obviously go with the Dyno Jet Numbers and Dyno Dynamics uncorrected Numbers..We dont BS for sake of BSing, we build fast street cars and back up all of our claims at the track.You will hopefully have some ET's tommorow night as WED is open time trials at Raceway Park and I live 5.4 miles from there.. I will be sure to bring my AAA card for a tow back!!lol
I have personally made offers to several members of this board to dyno on our dyno to see their "claimed" numbers and all of them declined..I even offered to pay for the Dynojets to prove their BS, no takers ever..I will take up ANYONES offer to dyno on their DYNO OF CHOICE..In fact I will be in Maryland in the enf of July, if you would like I will break Turbo XS's dyno again and go to Altereds Dyno if they offer a free dyno..
I have nothing to hide..If my car dont make 673 on another dyno then it dont, its still damn fast..