My Vtec (1st-gen City): Tuned by Race Concepts I Have had the pleasure of driving a vtec since 5 years. From the start, I wanted a nice handling, reliable car that I could use daily and take it to the track over a week end (time permitted). From 2008 till 2010, the car was basically stock. It had the usual simple mods of a exhaust and a HKS filter from Race Dynamics. I had the pleasure of sitting in few fast vtec’s at that time and had heard all the horror stories of owning a modded ride and reliability. This prevented me from going overboard with the mods with my car.
In 2011, the header developed a leak and I got in touch with Joel, the founder and owner of Race concepts to build a new exhaust system. We used to ride along back in the days (around 2005) before we turned to car guys. Joel was very busy guy those days and he had very little time between his races to take on a project. He had showcased his personal car on many instances and I was really impressed with his knowledge and his approach to things. He had also dynoed his car to show the performance gain that he had achieved. This made me approach him to help me with my car.
Mid-2011, after months of discussing, Joel agreed to build a multi stage exhaust. The fabrication work took two days. It was finally completed and I was satisfied with the end result. There was a significant bump in torque and top end power over the previous 4x1 exhaust system, and the car felt real quick to make me a happy man. Now, while I was in the UK, I had picked up few items for the car like the JDM D-series manifold, braided brake lines, front brake pads etc. Joel suggested me to install a standalone ECU in order to exploit the full potential of the intake. Lot of options was available, however I decided to pick up the RD0901 standalone ECU. Joel did the install and tuning at Race concepts. Now along with power, a 3 way adjustable coilover was also installed to improve the handling of the car and make it safe and fun package for the street. Also went in a close ratio final drive. We clocked a 7.7 secs to 100 with this package. Without touching the engine.
Few months passed and the car was a joy to drive. The fuel efficiency was not hit and i was getting 11-12 kmpl inside the city with mixed driving. Had few talks with Joel and he felt that the car needed the next level of mods. Joel decided that he will install the JDM D manifold, strip the head and do his magic. Before stripping the head a compression test was done and the gauge showed 185psi all cylinders. It was discussed that Joel would just bump the compression a bit, work his magic on the ports and the combustion chamber, check for clearances and fit everything up. Install and the headwork went smooth, The intake manifold fitted with the stock throttle body and a custom calculated intake system with a BMS filter installed. The ECU was tuned to handle the new mods and the limiter was set to 8100 RPM. Few other goodies were added to make the car visually pleasing.
Now, I had been reading up on various sites and consensus was that the Vtec y8 head is best left close to stock, it’s very difficult to gain any HP’s and only a capable tuner can squeeze few horses from this head. Well post Joel’s magic, the car had transformed. Power was everywhere. The car had bucket loads of low end, a punchy mid and a crazy top end power. Compression was only 195psi in Bangalore on all Cylinders. The car could potter around town with no issues and returned a decent average similar to stock yet again. We had the opportunity to time the car using a Gtec-pro and we were very happy with the result. On the initial tune, we managed a time of 7.31secs to a ton. With further refinement of the setup and with the car stripped of all the audio and stuff in the car, we got to a 15 sec street car.
Later we further decided to improve the performance. So the cylinder head was removed to perform a next level update. The head was taken to a new level by performing a ful stage 4 mod. With radical work and redone valve seat etc and with stiffer valve springs. We still retained the stock cam and pulley. The exhaust system was slightly updated to handle the new mods and the car further transformed. The top end power was really crazy and the power would not fade untill the limiter set at 8150rpm. Joel was capable of pushing the car to such high power levels with stock internals. Stock bottom half, stock valves, stock cam and stock cam pulley. The cylinder head had taken the magic to the whole new level. Would work like it had a cam.
Now the next stages of mods are underway. We have since then installed a Race Concepts custom close ratio dog gearbox (3,4,5) and a revised final drive to improve on the overall performance. We also added an adjustable timing wheel. With a revised tune and intake mod, the car has now reached a whole new level. Its real quick to a ton and the engine grunt after 100kph and shifts are to die for. The top end power has now started to get scary. We havent got to fully time the car, but its currently in the mid to high 14s to a quarter mile. All this with just stock internals and no fancy engine parts. It was Joel’s target to get the car this low with times with stock internals and its finally got here. Technically making this as fast as a stock Honda Integra. We still aiming for higher numbers with the stock internals. After which, we will go all out with the NA mod and go full build on the engine.
With the car lowered, the body skirt kit has taken a beating so i removed the old bumpers and have new oem bumpers in place. The car is shod with Forged Enkei RPF01 wheels shod with BFG 205s. We have also shod the car with rear disc kit and top front, top rear and lower race braces from Race Concepts.
The car has come a long way from what we started 2 years ago. What has changed is that the engine has remained the same. What started as a 10 sec car with a standard engine which was factory fitted 12 years ago, has never come-off and the block has cut more than 3 secs to 100kph, while the cylinder head constantly went through radical surgeries. The result has been outstanding and hard for anyone to ever believe that it still runs on OEM Honda parts in the engine. Only the drivetrain and everything outside the block has changed. We have never dynoed the car, but always took reference from Joel’s previous builds and benchmarked the times. The car has currently breached under 7 secs to 100 and love its driveability, economy and bullet proof reliability. |