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 EFI Performance's test/reseach car.
 
 
Here's the plan,
 
Build a regular Blown 5.0l that you would see on the streets. 
Testing it with no chip, aftermarket mail box chip (from a major tuner), and then a TwEECer.
 
All the parts in this build up are out of box stock. 
  
Here's what we used....
 
  1.  Completely stock 1989 5.0l short block.  80,000 mile engine with proper maintance done.
  2.  Paxton Novi 2000 Supercharger Kit.
  3.  Leaving the engine untouched, we installed a DSS main girdle and studs.
  4.  This car has stock crank, pistons, rods, bearings etc.
  5.  Trick Flow Street Heat cylinder heads untouched.
  6.  Motorsport E-303 camshaft installed straight up.
  7.  Trick Flow Street Heat intake manifold.
  8.  70mm Mac Throttle body
  9.  80mm ProM Mass air flow sensor, calibrated for 42 lb injectors
  10.    42lb motorsport injectors
  11.    BBK 1 5/8 short tube headers.
  12.    MAC 2.5 in h-pipe with 2.5 in MAC Pro Dumps.
  13.    MSD Boost retard spark box. (we used the retard part for running with no TwEECer installed)
  14.    Aeromotive fuel system tank to rails.  (Adjusted fuel pressure with no TwEECer installed.)
  15.    AOD Transmission with a 2400 stall for the street.
  16.    8.8 Rear axle with 3.73 gears
  17.    AEM Wideband to monitor AFR
  18.    We also kept the Power Steering, Heater, Power Windows, the car weighed in at 3400 lbs.  
 
 
We were trying to copy what most street cars are running these days.
 
 
 
 
We then installed it in this 89 LX notch back.
The car was equipped with a Chrome Moly Roll Cage for safety and
meets all the NHRA rules for speeds up to 150 mph and a 8.5 et.
 
We first assembled this car and ran it with out any chip at all.
It had poor idle, the check engine light was on, started hard,
(Had to hold throttle down to start it.), engine surged at idle.
 
We strapped it to the dyno and it went lean and unsafe.
 
After adjusting the fuel pressure to 60 psi to cure lean problems,
it put down about 403 hp at the wheels.
 
The first runs done the track were not very impressive either.
 
It ran low 13's with about 105 mph.
 
Next we called a major chip mail order company with our combo.
They fixed the idle, the starting, got the check engine light to stay off.
They also adjusted the RPM Limiters, spark and fuel tables.
 
We installed the chip and strapped it to the dyno and pulled
475.6 hp and 475 ft/lb torque at the wheels. 
All looked good but we couldn't adjust the tune ourselves.
There was spots that it went lean and then to rich.
There was no way for us to change the tune. 
Nor could we data log our runs, or adjust at the track.
 
At the track it ran low 12's at about 115 mph.
 
 
The Last step we installed a TwEECer.
After working with the tune adjusting the tables
we got the car to run on the street just like the Aftermarket chip.
But now we can fine tune the fuel and spark.
 
The dyno run put the engine at 501.6 hp and 480 ft/lb torque at the wheels.
Off the the track the car ran 11.3 at 123.
 
Now to push the envelope, we installed a smaller supercharger pulley.
After some fine tuning at the track, the car ran a best 10.70 at 131.
Back to the dyno, it put down 553.3 hp 557.9 ft/lb torque!