| View previous topic :: View next topic |
| Author |
Message |
cooldevil
Joined: 23 Aug 2006
Posts: 16
|
 Posted: Sun Mar 16, 2008 10:04 am Post subject: need help for 740cc and dual intake ! |
 |
|
hi all i need help with my 300zx TT it has nismo 740cc inj. and dual intake with sigle maf and i have low speed drive .
the problem is when i start the car when its cold it idle fine at 1300 rpm and when it worm up to normal temp it drops to 1100 rpm after that when i give it some gas to rev it it begins to hasitat and die after i release the gas padel and when i start it again the rpm keeps pownsing from 1100 rpm to 200 rpm like it gowing to die then gets back to 1100 rpm just like that all the time until i shot it off and when try to give it stady gas to reach 2000 rpm you can see the needle stay at 2000 rpm then it backs off 200-300 rpm down then comes back on to 2000 rpm . |
|
| Back to top |
|
 |
nzniggles
Joined: 26 Aug 2006
Posts: 56
Location: New Zealand
|
|
| Back to top |
|
|
Performance_Addict
Joined: 29 Nov 2007
Posts: 10
|
| Posted: Sat Jul 12, 2008 4:53 am Post subject: May need the flower pot mod |
|
|
| Dual intakes are problematic with the MAF being so sensitive. Search the flower pot mod. It also sounds like you need to adjust your TPS and AICV screw. You may have a boost leak which can cause erratic idle, as well. Good luck! |
|
| Back to top |
|
|
Eric
Joined: 17 Nov 2003
Posts: 258
Location: Holland
|
| Posted: Sat Jul 12, 2008 7:24 pm Post subject: |
|
|
this is a common problem for dual intake/single MAF setups on the Z32.
This is mainly due to the imbalanced air "consumption" at idle (LH intake uses more air at idle then RH side)
an extra air balancing bar/pipe before the throttle bodies (as shown in the picture below) sometimes helps.
even better is a dual AFM or MAP based setup
-Eric
_________________
DTA-motorsport |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
