I'm not too sure what the cause could be.. But when I push my car a little bit I dont feel the same sensation of getting sucked into your seat.. What could be the problems? I just got my 1000 mile oil change, and of course, I only use 91 octane. Yeah, 91 octane is still crap, but thats all California has. Maybe I just got use to the feeling? LOL I dont know really, help?

Yeah, it could be the hot weather here as well right? Whats a good outside temperature to drive in?

Please help by giving every possible cause. Thanks!

 

Heat definately kills the power and 91 blows. All I have to say is let the modding begin. I bought my IX in March and after a week of driving it was wasn't that impressed anymore. You can see in my signature what I've done since the end of March and I'll be starting my build by the end of the year with either a Twinscroll 35r or 37r from Full Race. Horsepower is very addictive.

 

Could be heat. Could be spark plugs. Whens the last time you changed them?

 

you know i encounter the same feeling sometimes...but i believe its just that im used to the car. idk...although it does feel a lot more powerful with colder temperatures obviously but the motor gets heat soaked very easy too..so you know..like import said...mod it.
Thats what im doing...ive owned car 2 months now and i start my 35r install saturday. hoping for a whopping 550 horse to wheels by next weekend when ams tunes. right now its 365 to the wheels with very little mods. good luck

 

if you only have 1000 miles on the car, you shouldnet even be getting on it..... at all.

 

Well see thats the thing.. I left break in period to be a 1000 miles.. With actually 1100 miles on it.. I've only brought it up passed 5k RPMS, near redline, 3 times. Before then, I've boosted plenty but only up till 4.5-5k RPMs MAX, no real biggy.

Also, my car is brand new, so how could it be the spark plugs? Could it be them?

 

break in means no boost, at all.

 

Quote:

Originally Posted by MaxKanisha

I'm not too sure what the cause could be.. it could be the hot weather here as well right? Whats a good outside temperature to drive in?

Yeah, it probably has something to do with the 90+* F. ambient temps in your area as well as the wonderful 91 octane California gas. The ECU might be switching to the low-octane map. How much boost are you running?

 

Where in the manual does it say no boosting at all? All it says is to keep the RPM's below 5k for the first 600 miles. I also asked Buschur on how they recommend I should break my engine in. They told me to break in my engine on the way I plan to drive it. And thats what I went for, I didnt baby her too much, but then again, I didnt mash on her. Boosted a good amount, but that wasn't all the time.

As for pump gas, which is good? I've been using 76 gasoline stations, but my friend told me that Chevron burns a lot cleaner. So when I switched to Chevron, thats actually when I started feeling a little bit more sluggish. Could the certain gas I've been using be a problem?

Everything is stock on my car, so whatever boost that is, that is what I'm running? Just for my information too, what is stock boost? If I remember correctly, it tapers also?

 

I thought it was the other way round...

If I remember clearly, the manual tells you to engage your turbo as often as possible, while keeping all below 5krpm. Engine isn't the only thing that you need to break in, you need to break in the turbo as well as the brakes, the drivetrain and the components will automatically get broken in while you try to break in the engine/turbo (by just driving the car).

So don't forget to drive car often in the 3-5krpm range as well, and break in the brake as well, gentle and intermediate braking at different speed ranges up to 65-70mph (shouldn't take your car to higher speed during the break in) then do some harder brakes towards the end of the break in period (doesn't mean you slam the brake so hard you leave stretches of tire marks, you're still in break-in period)

Basic idea of the break in period is like stretching before you play sports, you loosen up before you get into vigorous movements, and it is important to stretch various parts of your body, not just legs and arms.

 

Plus the 'required' break-in period is only 600 miles, or 1000km.

To be safe, I wouldn't take the car up to its limits often until 2-3k miles, but from then on, your car would probably beg you to beat the @#$@ out of it and would be able to take the punishment without much of a problem (unless you crash of course)

 

91 octane + heat = knock = lower timing = flat performance =

 

So even stocks can knock? (No pun intended) If the engine knocks, how bad is that?

 

absolutely they can, especially with 91 octane and especially in this heat. I've seen some with mild knock and a few with major knock. The good news is that at lower (stockish hp) it doesn't necessarily equate to a major problem. However, if it were my car I would do some logging to see how bad it is and then think about getting tuned if it's horrible.

 

Break in does not mean no boost at all. For the first 500 miles we suggest driving at varying engine speeds. Do not get onthe highway and set the cruise control for an hour straight. The key to seating the rings is a variety of partial throttle and short bursts of acceleration. After accelerating let off the throttle while still in gear, letting the engine slow the car down. Don’t baby the car but don’t beat the hell out of the car either. A good variety of driving conditions is the best for engine break-in.