Re: Official I4 F/I Engine Bay Pic Thread
These pictures aren't going to win any awards, because I took them at night with my weak LED shop light. I was anxious to post them. I'll get better pictures during the day.
2 months ago, I was in the market for a car to replace a dying grad school car. I drove all sorts of used cars, mostly with "small, quick, reliable" on my mind. I tried a 2003 I4 A/T Tiburon and liked it a lot, but the car was sold before I got back to it. A friend at work knew a wholesale dealer with a Tib at his lot, so I looked at it. I climb inside and see some extra gauges on the A-pillar and immediately think "man, I'm not going to be able to buy this car if it's been modified and someone stepped all over the motor." I look under the hood and see a turbo. I know of turbos. I know the theory behind turbos. At that point, I had never driven a car with forced induction. The guy let me borrow the car over the weekend, and I put it up on the lift and looked under its skirt. To shorten the story, the motor had no obvious mechanical issues, and I got the car. The joke among my friends is that I set out to buy a car for transportation and accidentally bought a sports car with a turbo.
I've had it about 2 weeks, and I got very little info about what was done under the hood, because I couldn't talk to the original owner. I'm still investigating the car and figuring out what is installed and how it's hooked up, electronically. In many cases, I don't know brands of things or part numbers.
Under the hood is mostly stock, and very utilitarian. No beauty awards, here. No plastics. It has a CAI with a K&N filter that feeds the turbo, and it has an intercooler. I see that there is no MAF, but what looks like an OEM MAP sensor. The O2 sensors are OEM. Its got a classic Unichip (B series) with a T module controlling the boost. 7psi seems to be the max boost the manifold sees. I've got a bluetooth OBDII fob and Torque on my android phone to look at numbers. 0.5 psi is all the ECU ever reports, so after reading I'm guessing the Unichip is clamping the MAP voltage to keep it from throwing a CEL. Right?
I need to inspect the turbo soon. There aren't any obvious names on the housing that I can see from above or below.
I figured out really quickly that I will have more FI cars in my future, and probably most will be aftermarket. The car cost $17k off the lot in 2003, which is about $21k in today's dollars. Add 4 thousand dollars (or much less in my case, I figure) of turbo kit and computer and that's a lot of power for that price. Compare that to many cars that come from the factory with a turbo, and I think it'll be cheaper in most cases. I haven't put the car on a dyno or anything, yet. I want to get the map off the Unichip and examine how the last tuner set up the car.