cranny... need yer help again with JDM tune

btf · Post by **btf** » Tue Aug 04, 2009 4:39 pm

Cranny i hope u read this soon. i blew my engine, over-revved by shifting into 2nd instead of 4th.. anyways i bought a very low-millage k20a2. im going to use my JDM intake manifold, as well as my jdm cams. yet i cant use my jdm pistons(one of them is missing), im going to have to use the k20a2 pistons. i know for a fact that its half a point or so less compression, how severely would i need a retune? should i try a datalog or is it risky? please let me know. thanks

cranny · Post by **cranny** » Tue Aug 04, 2009 5:02 pm

just datalog and post it up man. should be close. timing will have to be changed maybe a tad.

btf · Post by **btf** » Tue Aug 04, 2009 7:05 pm

alright car will be done on friday, i'll do so then. thanks loads Cranny

btf · Post by **btf** » Mon Aug 10, 2009 4:25 pm

datalogged. a couple of things tho:
_ it threw an error code later on, saying that the A/F sensor isnt operating like it should something like that. went away a few mins later after i started it again. where is this sensor located? would i have a different one in my dead engine?
_ in the datalog there were ZERO knocks, but i did c my CEL flash just once a bit later on.
_ the car's idle is a bit weird, but it could be something to do with the exhaust. weird as in the interior is vibrating a lot, maybe 750 is too low?
_ it feels just a tad slower than it normally would be, but when i looked a the datalog, i was only doing 135 kph at the end of 3rd, normally i would do closer to 140, is that even possible? maybe the speedo reads different than the ECU.
i would recommend cranny to tune any car on here, i just cant believe he even does it for free. not a surprise how much "cranny need ur help" threads there are

starlet · Post by **starlet** » Fri Aug 14, 2009 12:43 am

yea cranny is certainly good, ill do some datalogs shortly,

All i do is pinch crannyz tunes then fine tune them abit for my car, but as i said goes better than my full dyno tune costing $$$$

Preety good considering im 1000's of miles away

cranny · Post by **cranny** » Sun Aug 16, 2009 8:52 pm

thanks guys i appreciate the kind words. its not all about money for me , im a true car enthusiast who likes helping out fellow car enthusiasts. im so busy these days with my own shop i have on the go , i cant get online as much as i used to , lol.

i need your map also btf , post up your map as well and ill have a boo.

btf · Post by **btf** » Mon Aug 17, 2009 12:18 pm

here you go. its vibrating at idle, something to do with the map or the header? a/f sensor is sometimes showing slow response, and at others no activity detected. i changed the o2 sensor a couple of months ago!

cranny · Post by **cranny** » Fri Aug 21, 2009 4:17 pm

heres an update bro , stick it on give me another datalog buddy.

btf · Post by **btf** » Sun Aug 23, 2009 8:25 pm

datalogged. i dnt know if u mind but i lowered my limit back to 8400... btw my wideband dies everytime it gets warm i guess, i think the datalog worked though. im knocking im 5th gear, u'll c it

cranny · Post by **cranny** » Sun Aug 23, 2009 8:46 pm

heres an update but you really need to fix the wideband issue buddy.

btf · Post by **btf** » Mon Sep 07, 2009 5:45 pm

datalogged, im not sure if the wideband thing is completely sorted, take a look. it might be just my imagination, but i tried an old tune we once did where we set the VTEC to 4500, car felt a bit faster maybe? i've read on the ctr forum that every car has an 'optimum' switchover point, it isnt always that the lower the better. what do you think cranny?

cranny · Post by **cranny** » Tue Sep 08, 2009 10:27 am

yeah your fuel jumps up and down alot during the datalog. gotta be something going on somewhere. the tune doesnt look that bad really but not being able to see what the fuel is doing sucks. datalog the other map you think felt faster post it up.

btf · Post by **btf** » Tue Sep 15, 2009 2:42 pm

sucks about the sensor. 3 datalogs,
_(o2fail)one when the o2 fails ,
_(1)one when idle, then idle with the ac on, then WOT from 1800-4000rpm,
_(2)and another failed(i think) attempt for WOT to redline. btw i dont know if i mentioned that this k20a2 has the JDM cams and intake manifold...

btf · Post by **btf** » Tue Sep 15, 2009 2:44 pm

the tune

cranny · Post by **cranny** » Thu Sep 17, 2009 9:17 pm

you need a fully functioning O2 sensor buddy.