Vtec kick back after intake instal?

**s2kjn** · 09-10-2011 09:11 PM

So I just finished installing my PWD JDM intake, and after all the hard work, I quadriple checked all connections as a lot of relocating lines including the valve sensor and solenoid and vtec solonoid was required. I then reset the ECU as I normally do after changing performance parts.

Then I went for a drive, once 3 bars on the temp gague showed up, I decided to got attempt to go to our favorite 9k range. As the revs climbed up, everything was as expected with more umph until I got to between 6-7k, I got the same feeling as though u would try to hit vtec when the engine is still cold. I tried again, and the same thing happened. Has anyone gOt a clue as to why this could be?

**dlai5552** · 09-10-2011 09:58 PM

Just coz your water temp is at 3 bars, doesn't mean that you're car is warmed up straight away and enough to activate vtec yet. Did you try a little later after maybe 10-15 mins of driving around or so.
Also, vtec only activated at a certain amount of throttle (someone once said 70% from memory, I think a bit less, but you get the point).
Now go try again

**VeYzZii** · 09-10-2011 10:25 PM

So did VTEC kick in.. Or it didnt kick in..?? Basically was there a sound difference?
What dlai is saying can be true IF vtec didnt engage, if the engine is to cold blah blah, it would just feel plain, no kick, no sound difference. I dont think temperature is the problem.

**lzybum** · 09-10-2011 10:52 PM

op did u have like an injen/aem cai before this?

**s2kjn** · 10-10-2011 07:37 AM

Yeah I let the car run for about 10 mins before. I tried again this morning, after driving for 20 mins granny shifting, I put the pedal down. It actually cuts exatly on 7k and as soon as that happens, I sensibly release the accelerator. I checked all lines and everything that was needed to be relocated again, and still couldn't find any loose hoses clamps or empty connections. I did also do a valve adjustment before I put in the intake, but before I insatlled it, I drove up to the shops, and was running fine.

@ LZYBUM, It was the stock airobox that I removed.

**s2kjn** · 10-10-2011 11:53 AM

Ok, so I also tried revving in neutral, and still does not want to go past the 7k mark exactly.

**s2kjn** · 10-10-2011 12:43 PM

Im wondering if a MAP what will do the trick...any suggestions?

**s2kjn** · 10-10-2011 05:40 PM

Well gave that a shot and re deserted the ECU. Problem still there....

**MRJDM** · 10-10-2011 09:39 PM

Do u have enough oil in ur car?

**s2kjn** · 10-10-2011 10:09 PM

Yep oil level is fine. Didn't know that oil levels could cause this kinda problem.

**dlai5552** · 10-10-2011 11:21 PM

Oil level definitely affects vtec because it all depends on oil pressure (as well as engine temp, speed and throttle position).

**VeYzZii** · 10-10-2011 11:39 PM

So its like a false redline.. Any engine lights? Sounds like a vtec solenoid problem but i dont understand why it would happen after installing an intake. Why dont you reset the ECU and try again.