Meet the World’s First 10 Second Civic X
PRL Motorsport set themselves the goal of building the first 10-second 10th generation Civic, and then crushed it on the quarter-mile.
When PRL Motorsport decided to crack the 10-second quarter-mile with the current generation Civic, they decided to do it with a stock ECU. The project car, a White Orchid Pearl Civic Si, was dubbed Snow White and the build has been painstaking and well documented since 2017.
Just a few weeks ago, the tuning company showed that Snow White’s 1.5-liter turbo engine was now making 617.62 horsepower and 520.53 ft-lb of torque at the wheels. Now, Hondata has released a video on the company’s YouTube channel of the brutally rapid Civic shredding it’s way down the drag strip and clocking a time of 10.99 seconds at 133.57 mph.
PRL Motorsport appears to have used every single trick in the book and added a few extra paragraphs along the way. The list of modifications is monstrous, but the highlights for the engine build include a CNC Werx CSS cylinder block, Brian Crower connecting rods, JE 73.5mm 10.3:1 compression pistons with a Brian Crower valvetrain. However, PRL has stuck with stock camshafts, stock valves, and the stock port head. PRL switched out the turbo for their own big turbo kit with turbine housing unit and added a Zex wet shot nitrous kit that’s jetted out for a 100 shot. The transmission is also stock, but PRL is using a 725 race twin disc clutch from Clutch Masters to connect the power to the cogs. To help the engine breathe, PRL is using its own front pipe, catless downpipe, Cobra CAI with the Race MAF housing, and a 3-inch exhaust dump.
ALSO SEE: 2017 Honda Civic Si Review: The Most Capable Si Ever
Without the nitrous system, Snow White made 403 horsepower and 420 ft-lb of torque at 32 PSI from the turbo. And, that’s how they found the bottleneck restricting Snow White making more power. They thought the small turbine housing may have been a restriction but after experimenting with a larger one, determined it wasn’t. The larger housing shifted the power curve as expected, but to take advantage of the ability to breath better at the top of the power curve and take more boost, the team needed to find a way around the factory MAP sensor limit. Once PRL figured out the 9th Generation Civic’s MAP sensor was a direct fit and there was a way to get Hondata’s 4 Bar MAP system working, the next set of problems arrived and the real struggles began. Which is where Hondata as a company came in.
The Hondata and PRL teams got together and dedicated themselves to getting everything tuned and with the right hardware. Between them, they figured out how to get the power smoothed out at the top of the rev range and fix a power drop that was happening around 7,000 rpm. Systematically solving problems allowed them to increase timing without increasing knock control and get to that magic number of 617 horsepower with 520 ft-lb of torque, then to go stamp down the 10.99 second time at 133.57 mph. Our congratulations go to PRL Motorsport and Hondata for achieving this stunning goal. It’s a colossal achievement and a monster of a car, particularly when you consider it only has 4-cylinders and 1.5-liters of displacement.
Join the Honda-tech forums now!
