1994 Toyota Supra gets a new Precision Turbo upgrade to a GEN2 PTE6870

Toyota Supra PTE6870 boost only

Andy contacted us prior to even taking ownership, or even seeing the car in person to make more power before it made it to him in the Virgin Islands. We swapped out the Precision 6765 for a Gen2 6870 unit. It was indicated that it made 877rwhp on boost only, & he wanted over 1000whp on boost only...then spray the Nitrous. We obliged with upgraded 450lph E85 Walbro fuel pumps, & a new set of ID2000's to fuel this new turbo with the extra boost. Also installed a Strange drag race rear brake kit, along with a new RPS triple disc strapless clutch kit.MKC SFWD Civic shirt 126

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Breaking the World Record for a stock BMW N54 motor

2007 BMW 335i

This 2007 BMW 335i project has been one insane project to get our hands dirty with. Josh came to us with the idea of installing a top mount FFTEC turbo kit, along with the Motiv Motorsports top fuel injection system. The tricky part about this project is the fact that from BMW, the engine is a direct injection motor. We control the OEM DME through the Cobb AccessPORT, & control the Motiv Motorsports injection rail with a Haltech Platinum Sport 1000. Modified by KC also built a custom 4" midsection to dual 3" straight pipes out the rear of this monster.

Motiv Motorsports broke the world record on a stock N54 motor with 829whp. We backed it up with their product with an 861whp on this project here.MKC SFWD Civic shirt 032 MKC SFWD Civic shirt 033 MKC SFWD Civic shirt 034 MKC SFWD Civic shirt 035 MKC SFWD Civic shirt 036MKC SFWD Civic shirt 039 MKC SFWD Civic shirt 040MKC SFWD Civic shirt 043 MKC SFWD Civic shirt 045 MKC SFWD Civic shirt 046MKC SFWD Civic shirt 049 MKC SFWD Civic shirt 050 MKC SFWD Civic shirt 051MKC SFWD Civic shirt 219MKC SFWD Civic shirt 256 MKC SFWD Civic shirt 257 MKC SFWD Civic shirt 259MKC SFWD Civic shirt 314 MKC SFWD Civic shirt 315 MKC SFWD Civic shirt 316 MKC SFWD Civic shirt 317 MKC SFWD Civic shirt 318 MKC SFWD Civic shirt 319 MKC SFWD Civic shirt 320 MKC SFWD Civic shirt 321 MKC SFWD Civic shirt 322 MKC SFWD Civic shirt 323 MKC SFWD Civic shirt 324 MKC SFWD Civic shirt 325


Justin S.’s 2011 STi build

This 2011 Sti came to us on it's 2nd warranty motor, that had an issue. They decided they didn't want to go through the pitfall's of an OEM piston failure again, & decided on the Rallispec standard street short block. Modified by KC performed the cylinder head service work, & assembled the long block assembly, ridding itself of all emissions items, as well TGV deletes from IAG Performance, & fuel rails to match for the ID1000 upgrade, & a DeatschWerks 65c pump feeding them. Along with the motor & fuel upgrades came the Blouch 1.5XT-R, GrimmSpeed EWG up-pipe with TurboSmart 45mm. Produced 375awhp & 375awtq on 91 octane pump gas. It will return this spring to get it's corn tune.


Poncho Racing & Team Rotary de Kansas City in action at World Cup Finals Imports vs. Domestics 2014

Team Rotary de Kansas City was represented well in Maryland for the World Cup Finals Imports vs. Domestics 2014 by Poncho Racing. We changed quite a bit just before leaving for the event. Went to the Borg Warner 91mm turbo, & new AMS2000 boost controller. Got some great data for the new setup, but in the end had some issues with an older motor. We'll be back for the 2015 season with a fresh motor build for this little RX2 monster. Stay tuned.

WCF 2014 Round 1 qualifying Super Street FWD Modified by KC Civic goes 9.02 @ 173mph

Modified by KC made it to World Cup Finals Imports vs. Domestics 2014 in November for it's first time. We made it out there without having the proof that we were even strong enough to get to the game. We knew that the car was ready. Off the trailer for Test 'N Tune, the MKC Super Street FWD Civic went 9.37 @ 170mph. Eyebrow's rose, heads started to turn in our direction, as the competition knew that these boys from Kansas brought their "A" game.

Forced Performance Super94 on a 2.3L Evo at Modified by KC

Jason Crooks did a magnificent build on this Evo. His attention to detail is of the utmost quality.

This has been one fun project. This car came back from the DSM/Evo Shootout 2014 in August with a head gasket blown in Ohio. Didn't bother with it there, and just waited to deal with it when it got home. Needless to say, it ended up getting an MKC CNC ported head, balance & blueprinted the short block assembly with Manley Turbo-Tuff I-beams, and Wiseco 9.5:1 E85 pistons. Forced Performance Super94 mated to the long block via JMF manifold.

This 2.3L is cranking out nearly 740 all-wheel torque!!! Watch for this street monster.


MKC Evo VIII with NEW FWD Facing Manifold & PTE6765

The MKC Evo is back!!!!

Watch for this little street machine around town. It may break some hearts.

It has an MKC FWD facing manifold fitted with a Precision Turbo 6765. An ETS 4.5" FMIC with MKC aluminum piping feeding a GM LS3 DBW throttle body. Magnus Motorsports intake manifold with Injector Dynamics 2000cc injectors fed by a Radium Engineering triple pump Fuel Surge Tank. The exhaust gases exit via the MKC 3" SS downpipe to the V&P Racing 4" SS exhaust system. Runs on Link G4 Xtreme for the DBW capabilities.

MKC SFWD Civic Goes 8’s @ World Cup Finals Imports vs. Domestics 2014

It was a long road for Modified by KC this year on the drag racing circuit. Started out the year with some new goals, & new idea's for the car. Set those idea's on paper, & soon to the fabrication table. Thanks to Sheepey Built, we were able to get the manifold & intercooler setup to set the foundation for the rest of the build process. Once the BorgWarner 72mm turbo from Full-Race was set in place via the Sheepey Built manifold, we were able to fabricate the 4" exhaust & dump tube to exit the hood for more downforce on the front end going down the track.

Got the intercooler setup on the weight bars, which almost seemed to be built for the car. Fabricated the intercooler piping with Vibrant's Vanjen clamp assemblies. Started the project with a GM LS3 DBW throttle body, being controlled via ProEFI. Quickly realized that the DBW throttle body did NOT like anything over 40psi of boost pressure. Went back to the MoTec M800 (the only way to go), along with the cable throttle body, & new motor. Found we were in real business with this setup!

Modified by KC was able to make it to some "Test 'N Tune" events at Heartland Park Topeka, & was able to get some great data out of the car. Ran a 9.37 @ 165mph, & backed it up with a 9.66 @ 165mph. This gave us the confidence and passes that we needed to know that we had what it takes to run with the "big dogs".

Modified by KC made their debut appearance at World Cup Finals Imports vs. Domestics 2014 and represented Kansas City well. Right off the trailer at "Test 'N Tune" the Super-Street FWD Civic ran a 9.37 @ 167mph. First Round Qualifying ran 9.02 @ 170mph, sat in 17th place. 2nd Round Qualifying tripped lights when popped out of gear, fell to 19th place. 3rd Round Qualifying ran 8.84 @ 175mph! We got our first 8 second pass!

Follow Modified by KC in 2015!!!

MKC SFWD Civic getting some new pipes

MKC SFWD Civic gets tipsy

MKC SFWD Civic gets tipsy

Aeromotive 340lph HP Fuel Pump Test: E85 & 500+ WHP EVO 8

So with many people having issues getting over mid 400 on these cars on E85 with just a basic 255lph setup.

We decided to try out some alternatives. We have done plenty of setups with inline Bosch 044 pumps as well as double pumpers but wanted to see what could really be done with a single in-tank pump (we will be trying more such as the DW pump and the new walbro when it is released).

The car we are using is a 2004 Evo with the following mod list:

  • Stock 2.0L motor
  • Kelford 272 cams
  • Kiggly HLA
  • Kiggly spring and retainer set
  • AMS intake manifold
  • Full-Race exhaust manifold
  • Ported FP Red 80mm Housing
  • FP o2 Housing
  • full Buschur 3" exhaust
  • Turbo xs downpipe
  • ID1000 Injectors
  • Aeromotive 340 HP Fuel Pump
  • Vibrant intercooler
  • MKC built intercooler pipes
  • Tial 50mm Bov
  • ProEFI 5 bar map sensor
  • MKC 3 port boost control setup

MOD's Added During Testing:

  • Fuel pump 14V re-wire
  • Aeromotive fuel rail
  • Magnafuel FPR

First we wanted to see how far we could push this new pump given the setup above before it would start to go dangerously lean and we would have to back off, also keeping peak torque down around 400 to 420 wheel torque as a maximum as this is still on the stock block and a daily driven car.  Here you can see in the upper RPM's the AFR's start to go dangerously lean into the mid 13's.  This is at 26psi @ peak torque and 30 to 31 pounds of boost by redline.  Evoscan was showing 114% injector duty cycle at redline and 98% by 6500 rpm.

After this we proceeded to do a 14V rewire to the fuel pump which gave us back around 1.0 AFR point at redline, but still left the AFR's in the mid 12's at redline.  Everything in the map was left the same for timing, fuel, and boost.  Evoscan was showing 114% injector duty cycle at redline and 98% by 6500 rpm.

Our last addition to try and get more flow from this setup and keep the AFR's safe, is we installed an Aeromotive Fuel Rail and Magnafuel Fuel Pressure Regulator.  The idea here was to see if we could up the base fuel pressure enough to give us the needed fuel at redline and bring the AFR's back to a flat 12.0 at the current boost level.  We first tested at 60psi base, then 55psi, and finally 50psi.  Again, everything in the map was left the same for timing, fuel, and boost.  Evoscan was showing 114% injector duty cycle at redline and 98% by 6500 rpm.

Even with the added fuel pressure, the Aeromotive 340lph fuel pump can't keep up similar to an un-modified walbro 255lph HP unit. Personally I was hoping that it would be able to sustain and hold good AFR's on E85 up to 525whp or 550whp on our Dynojet dyno. Next we will be testing the walbro fuel pumps when they are available this summer. Here are the final numbers for the car with a safe AFR at redline. This was at 25 to 26 psi again at peak torque and 29psi at redline.