Sleeper 2007 Civic Si 

He’s heavily playing with fire unless he upgraded his oil + fuel system and trans

LHTPerformance 369 whp on wat gas?

LHTPerformance 93 octane?

LHTPerformance : Installed Kraftwerks Supercharged, alpha series headers, lighten fly wheel and ACT hydraulic clutch 76 mm mega power exhaust system on my O6 Civic Si with 385 whp but have check engine light on. We replaced the sensor but still the same. Any solution clearing off the check engine light.

I guess we missed that in editing. Be sure to give it a Thumbs down...lol

These Civic Si blocks can typically run up to 500-550whp, if turbocharged, on a completely stock block. This particular kit, I've seen just about 440whp out of it, without over spinning the rotrex unit, or even touching the internals, or etc.

What were the extra mods needed to get to that 440whp level? what is your max effective redline without over spinning the supercharger on this kit? I was looking at the TVS 1900 kit but if i can squeeze 440 out of CW id rather go this route. thank you in advance

@@jpezman1 In the description, he said taking out the cat added 20-30, but i would also like to know how to get even more.

@@Christusolus running a 3inch exhaust, larger throttle body, upgrading to a cold air intake, porting the intake manifold, ect. The intake that comes with these kits sucks in hot air from the back of the motor. LHT has made a better intake that takes in cool air from the front of the car. Doing the things Ive listed is good for just over 400whp. To get 440+? Im guessing you would need to start looking at a mild cam or spin the supercharger more.

@@ryanfulkman thanks mate

Just added the SC.

​@@LHTPerformanceI'm Super Late But Did You Guys Keep The Z3 Oil Pump?

I have use Comptech kits many times in the past. Biggest issue is heat as they are non intercooled. I like the idea of the Merc racing kits but never used them.

@@LHTPerformance many thanks!!

@@kseries20-24only No problem.

The99210 We built this car 5 years ago. It’s stilling running fine.

LHTPerformance just with skunk 2 headers and nvidia exhaust?

We welded the cat directly to the exhaust and welded the female flange to the other side. It bolts to the header in the normal manner.

My question though is, was this the stock cat that was welded on? Or is this an aftermarket cat?

I'm in on this, what cat was used? Did you have to cut the indvidia exhaust and weld in the cat?

Clutch Master FX300

There’s many waste to identify this, knock can be often seen as a slight mis fire before occurring. I like to read many aspects, the knock sensor won’t tell you everything.

These kits don't need any maintenance for the first 100,000 miles i believe. As long as you use the standard size pulley.

Yes.

+Shawn Booth they are two different types of boost silly

There is no turbo?

Centrifugal style, sounds more like a turbo, you can here the whistle

@@sleeper.simulant7327 possibly I just think some Joe blow got a new car and threw that shit on the title for some likes if you ask me but hey what do I know

I do hear some kind of whining, though. It seems to be coming from this area.

if an engine is tuned correctly you wont see a huge Vtec jump or dip.

Of course. Once you mess with the oem settings, you run the risk of your car crapping out on you.

Won't matter either way it's a blow through system.

Unless you're pushing close to 600, you're good with the stock TB on a blow through system.

It doesn't matter with this kit, these rotrex units have their own form of measurement, they run 1X,XXX rpms. However, these block typically cannot handle more then 8800rpm.

***** We are already over spinning the charger at the 8400 recommended .... 8800 will cook the internals and you will be out 2500 real quick.

Jose Villegas don't fuck with a sc. go cheap. spend 138$ on new air intake. new exhaust select the make you want. range price from 150$-300$ get the basics. take out all interior except driver and passenger seats. and you will see tremendous results for a total price of about 500$-750$. now if you have lots of money then get the sc but we are talking anywhere from 2,000$ to 4,500$ to go that way.

ahh, I still want to daily the shit lol

Jose Villegas lol for the love of god please don't listen to this guy. No decent exhaust goes for less than $270 at the moment... for starters... a decent catback is going to run you $400+

Also, removing your interior pieces and seats won't make a huge difference. It's not going to matter unless you're doing it for competition purposes, which i assume you're not. Leave your interior alone. The plastics and rear seat cushions are nearly weightless. You could probably lose the same amount of weight by removing your spare tire kit lol.

I have a 2007 Civic si & I bought a Tsudo 70mm catback for $270 & with shipping I think it ended up being about $320.

Young G Either Facebook, Instagram, email, phone and sometimes smoke signals 🤷‍♂️

Robin Tammik because its a honda

Of course, Makes perfect sense. I have not control over the adds.

soundkillr I was still learning how to put clips together and edit. I’m by no means good but I think I’ve improved. Thanks for your comment. Do you have examples of your work I may see ?

Clutch Masters