Another tip-in jerking question........

thething96 · Post by **thething96** » Thu Oct 29, 2009 1:27 pm

I've tried different setups, but no matter what, everytime,even at very light throttle, the car jerks. I've adjusted fuel and ignition tip-in, but no luck. As a matter of fact, when I add fuel at tip-in, the whole tip in column runs rich, which I don't know if its normal. The IAT is relocated to the intake. Just in case, car is a 98' type r, stock, except for a warm air intake. Any suggestions? Thanks......................

David974 · Post by **David974** » Thu Oct 29, 2009 1:51 pm

I've a the same problem and this is more like a wrong fuel cut setting but i don't bother to lazy to play with my fuel cut settings so check your datalogs and play with your fuel cut

thething96 · Post by **thething96** » Thu Oct 29, 2009 2:01 pm

That's what I thought at first. But the car has a descent tip in afr, even though i'll be at 1% throttle, and slightly go to 2,3,4,5 %throttle, the car will still jerk. It seems that the problem is not afr issues. Is there another reason as to the car jerking? Thanks....

ge0ne · Post by **ge0ne** » Thu Oct 29, 2009 4:51 pm

you are having the issue with stock injectors?

thething96 · Post by **thething96** » Thu Oct 29, 2009 6:35 pm

the injectors are actually rc 550's high imp. believe it or not,this set of injectors are not that bad. i've had some bad rc's,and specially precision 1000 's.............

Post by **Bugermass** » Thu Oct 29, 2009 8:43 pm

have you looked to see if your fuel cut is going active/inactive.. Mabey it needs to be adjusted.

thething96 · Post by **thething96** » Thu Oct 29, 2009 10:35 pm

Ill datalog soon and see what the f is happening. The car doesn't feel like its going in and out of fuel cut, just jerks for a split second. But who knows. With my luck, its probably something random as f**k, probably solar flare interferience, or the lunar probe possibly crashing on the moon.

Post by **Bugermass** » Thu Oct 29, 2009 10:46 pm

LOL.. who knows lol..

thething96 · Post by **thething96** » Fri Oct 30, 2009 11:05 am

Looking at datalogs, the car is partially leaning out at about 10%tps. I've added 20% tip in fuel trim and is still some what jerking, not as bad at very light throttle, but still the same at regular acceleration. I don't want to add too much tip in fuel, because it makes the decceleration run rich, specially while idle recuperation, it goes to 10.0-11.5 afr. It's getting really anoying. Any other tips would be, and I can't stress enough, GREATLY APPRECIATED. THANKS........

David974 · Post by **David974** » Fri Oct 30, 2009 12:14 pm

So you didn't play with fuel cut settings? also check your distrutor cap and rotor and an eye on spark plugs

thething96 · Post by **thething96** » Fri Oct 30, 2009 1:43 pm

spark plugs are about 1 month old, bkr7e's. wires are about 2 months, ngk blue's. cap and rotor are about 8 months old, oem honda. could it be timing related as well? i have stock settings for tip in ignition, but am not very familiar with those setups, don't want to mess with the stock settings, and end up getting worse.................

Post by **Bugermass** » Sat Oct 31, 2009 11:24 pm

post your cal and a datalog with the issue.

thething96 · Post by **thething96** » Mon Nov 02, 2009 1:44 pm

I will post pretty soon. I'm using the stock 02 sensor to datalog ectune at the moment, but I do have an AEM wideband installed in the car, working good. The reason why i don't hook up the wideband to ectune, is because a lot of people have told me that the AEM wideband is kinda bad, not very accurate. I know these wideband are slightly off. When i dynoed my car, the wideband would read 12.0 afrs, but the dyno sensor was reading 12.5 afrs. I would think that a 50,000 dollar dyno is going to be more accurate than a 200 dollar wideband......

relic1 · Post by **relic1** » Mon Nov 02, 2009 4:09 pm

thething96 wrote:I would think that a 50,000 dollar dyno is going to be more accurate than a 200 dollar wideband......

depends on what wideband they have, and where they placed it. it's not uncommon to see a little difference between the tailpipe mounted wideband and the one in the stock O2 location. whose dyno were you using?

thething96 · Post by **thething96** » Mon Nov 02, 2009 5:35 pm

It's in a shop called Fluid Motorunion in Plainfield. These guys speciallize in european cars, and their work is f*cking AMAZING!!! I was really amazed when I saw the \"dyno lounge\" they had( it's like if a restaurant and a dyno room had sex, then the\" lounge\" would come out!). They have a new Dyno Dynamics...........