Sluggish 3rd and 4th gear low to moderate throttle boosting

diSTiNCt · Post by **diSTiNCt** » Thu Jan 21, 2010 4:00 pm

Hi guys,

In hopes of improving my tune, I've been lurking on the forums for some time. And I have fixed a number of issues but I am still noticing a few problems:

1) Especially in 3rd and 4th (low to moderate throttle from 2000 rpm to 3500 rpm), acceleration can be challenging and building boost is not very smooth. Sometimes it feels like I am hitting a wall then boost slowly builds. I lowed the timing in columns 11-13 and it feels better but still sluggish.

2) While in closed loop operation, my car runs really rich (so I am running open loop for the time being)

- the calibration (attached)

- a datalog of a problem (attached)

- 1996 Civic Ex
D16y8
Block: 75mm Bore (Vitara Pistons + FJT rods)
Stock Head (rebuilt with all OEM Honda parts; recently installed OEM
plug wires, cap and rotor)
NGK BKR7e plugs gaped at .03
Edelbrock Turbo kit (GT28r turbo, performer X intake manifold, etc)
Walbro 190
Lucas 440s
91 Octane

- p72 ECU with Hondata S300 using a jumper harness

Thanks in advance

diSTiNCt · Post by **diSTiNCt** » Sun Jan 24, 2010 8:38 am

ttt, need some advice

additionally, can I lock Hondata timing to anything else besides 16 degrees? say 12 degrees? In the timing window, I adjusted it down to 12 but there is no confirmation window that pops up say that timing is locked/synchronized.

Post by **Spunkster** » Mon Jan 25, 2010 1:04 pm

When you change the number in the set timing window that is the timing that it will run and you must synch teh distributor with it using a timing light.

http://www.hondata.com/help/smanager/se ... set+timing

You may not have enough ignition advance in the maps, but since i do not have the car in front of me it is nearly impossible to say. What you are describing could be anything. You really need to get it tuned on the dyno and have it looked at by a tuner as only someone than can do hands on troubleshooting can solve this type of issue.

diSTiNCt · Post by **diSTiNCt** » Mon Jan 25, 2010 9:51 pm

Spunkster, thanks for your advice. I actually advanced timing by one and a half degrees and it is driving much better. I will check the plugs soon.