If your tune is shitty u need a built motor at 300, if you are beating on the car in every light ull need to worry about ur tranny first! But it all depends on how YOU BEAT ON YOUR CAR. 400hp you can beat on your motor all day!! But at 350 your 4th gear will blow, so it depends what your END GOAL is in my opinion before going on boos you need to set a goal or you will learn the hard way and spends lots of money!
IF you are set on turboing the car, get something like the PRL stage 2 kit, and go from there. But remember, once you start hitting close to 400whp, as mentioned above, your 4th gear will eventually go out.
It really comes down to what kind of power band you want. I'm currently at 384whp/312wtq and been boosted for about 10k miles with stock block and transmission. Been extremely reliable. I want more power, so I'm in the process of rebuilding my transmission, switching to e85, and upping the boost. My goal this go round is 450whp.
I've seen a few ppl with well into the upper 400 to low 500 with stock block for a period of time and had no issues.
Please keep in mind that there's more to this than just HP, too. Weight and great ratios pay a huge part. You'd be amazed at the cars a 2013 Si sedan with a properly installed and tuned Craftwerks kit and around 340 HP at the wheels will leave behind. I was a passenger in such an Si and it walked away from a very clean, newer model BMW M3.
If I was doing to build our 2015 Si for my wife, I'd do the Craftwerks kit. Fits and installs easily with no hassles. Of course, you do not get the low end torque that you get with a really high quality turbo kit, but that is far more complex. With the Craftwerks kit, it actually seemed to me to drive just like stock Si...if a stock Si had 340 horsepower at the wheel. Loads of fun!
I have a 2010 Accord LX Sedan (5AT) that I've just finished a turbo build on, and I have a vague idea of what to do next, but I want to see what the more experienced people's opinions are on it.
A little about the car/build:
Koni FSD + Eibach Prokit
2015 Supercharged SI throwing codes for engine start system, power steering, traction control (and wont allow me to turn on/off), hill start, and the car requires me to push and hold start button for it to start.
I recently moved so bringing the car back to original tuner is a...
Hello everyone, I’m in towards the end of installing the prl stage 2 kit on my 2015 civic si. Everything is put in, id1050 injectors, dw 65c fuel pump, comp stage 3 clutch & comp ultra lightweight flywheel and intercooler/piping, the turbo is still not mounted since we were sent the wrong oil...
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