Y8 Timing
 

I;m going to be tuning my car this week:
D16Y8 with arp head studs
57 trim t3/t04e at 11.5 lbs of boost
dsm 450cc injectors
innovate LC-1
Crome Pro

From what I hear, the best way to tune a y8 is to set the dizzy at 12 degrees. I have a stupid question...how do i do that? Any help would be much appreciated.

Re: Y8 Timing
 

I'm not 100% sure, but i think the y8's timing is already at 12 degrees BTDC, i know the y7 is. what you need to do is in uberdata select your entire timming map and take away timming until your upper left corner goes from 16.50 degrees to 12.50, then go from there.

Mark

Re: Y8 Timing
 

NO DON"T DO THAT!!! :o

the timing maps are very differant from Y8 to Z6 so you will need to download the P2P timing maps or just download a crome bin for a y8 that already has the P2P ignition maps in it. I uploaded a few to xenocrons site that have them in it, that would be a good start to go from for tuning.

Re: Y8 Timing
 

I know not to use a zc map and have plenty of p2p bins to play with...my question is, do i need to make any physical adjustments to have my car run at 12 degrees at the dizzy

Re: Y8 Timing
 

it is always a good idea to check your timing with the stock ecu in and then swap the chippe decu in and make sure that nothing has changed with the timing with a timing light.

Re: Y8 Timing
 

try these, there y8 base maps for boosted app i believe with similar set-up

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Beware anybody's .bins *FOR USE AS BASEMAPS* except mine, xenocron's, or SOHC_MShue.

I have not discussed Y8 timing in depth with anyone else, that I would trust an engine on them.

No offense, zc1.8crx... I am on someone else's computer + no crome, or else I'd peek and tell you what I think.

I posted the stock MAP sensor basemap on ------------- .bin repository, find it there.

Re: Y8 Timing
 

non taken. i found them on pgmfi and i also believe one of them is yours or told it was.

Re: Y8 Timing
 

I ended up taking the base that was burnt from me before and saving the file off the chip and working from there.


Still needs some work but so far so good.

By the way, Crome Pro is so worth it. I cant imagine doing it any other way. Makes it so painless

Re: Y8 Timing
 

Will someone take a look at this basemap...I used a p2p map from pgmfi and added boost and such

Just want to make sure that the timing is a good place to start. would much rather loose some power to too conservative timing, than too extreme. Thanks

Re: Y8 Timing
 

uggh now my lc1 isnt working right...its reading 19.64 afr and not changing at all

Re: Y8 Timing
 

LC1 are glitchy; if they were more stable I'd own a million of them. Check it for codes in logworks?

Enjoy the attachment. Around the 13.5 psi mark it gets too rich; car was running out of fuel pump. Ignition is dyno tuna'd to 10 psi, and various ppl report they lock the timing past that bit. I yanked another degree or so to be on the safe side; 7-8 degrees @ 10+ psi should get the job done, with base ignition timing set to 12 degrees by yamming the distributor all the way.

Re: Y8 Timing
 

JD, are your bins for crome? What version? Whenever I open them they look really wacky. I'm using Crome beta 1.1.8

Re: Y8 Timing
 

I'm using 1.2.0.24 with ABT+ 2.0 and FVFT 1.99RC4. Crome Development forum under FVFT 1.99RC4 thread links to current developmental version of Crome. Read whole thread; you have to uninstall older ABT and FVFT versions. This is latest in cutting edge hotness, you will jizz your pants.

Pay close attention to individual cylinder trims under Advanced Tables. ----------ing #3 is sucking 10% more fuel, because flow is not particularly balanced through a Y8 IM, the log manifold on the car, nor the stock fuel rail at those pressures/powerlevel.

Set that skrill to 1.000 all the way across, take a few pulls, and richen up the cyls that show signs of pingies on the *fresh* plugs. Dunno what your engine will like, but BRK7E-11 or R5672-A8 is around the heat range you'll need for 10-15 psi.

Re: Y8 Timing
 

Sucks that I gotta get rid of my shiny new Iridiums...

I'm gonna try to find that new version and hopefully they'll make more sense.

Re: Y8 Timing
 

Don't ever run iridiums, or platinums. That tiny pinprick electrode is a hotspot.

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Ya, I know, I've read your many posts on it... Sux cuz they were expensive. I bought them b4 I decided to go turbo.

Re: Y8 Timing
 

I figured it out...was a bad connection

My obd1 to obd 2 conversion harness had a partially torn wire at d14.

Will be trying out that map in a few minutes

Thanks

Re: Y8 Timing
 

Oh ya, they make a LOT more sense now. You should see how crazy your maps look in 1.1.8. They didn't make any sense at all. How stable is this version? I don't wanna blow my engine up on my first try.

Re: Y8 Timing
 

ughh..i guess i was just kidding about the wideband. Now its reading way too rich. I guess ill completely rewire it

Re: Y8 Timing
 

So I got my wideband back. And i can't seem to get any sort of a decent fuel map out of JD's map. Is it just me or is it completely way to rich in certain spots? Am i doing something wrong? All ive even done so far is to modify the fuel multiplier. I cant get a 14.7 idle unless i put my injectors all the way up to like 600cc multiplier. Keep in mind these are dsm 450s

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I just tried another map too with multiple fuel multipliers and my car is still running crazy rich..what could be wrong?

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Im thinking injectors gone bad? Anyone?

Re: Y8 Timing
 

Hell if I know. What us your fuel pressure? Have you tried changing fuel values to tune your AFRs? Different ECU?

Crome is wierd, it does not always save fuel multiplier when you save a .bin... Start with Crome 1.1.14 or the 1.2.0.24 beta (NOT 1.2 Final) with ABT+ 2.0 and FVFT 1.99 RC4 and do a straight recurve for whatever your injector size is... then start adding values to the offset until the car idles perfect. At that point it should operate in the NA range more or less stock.

Re: Y8 Timing
 

Stock fuel reg, stock pump

Well it started to do it out of the blue..ie i wasnt tuning at the time. on your bin, i can get the idle pretty decent of o set the injectors to around 600cc. so the fuel multiplier is making some difference. but when i d\try to drive it afr go crazy rich, normally between 9 and 11 afr. note, this is while running a basemap that has always ran fine for me in the past.

I'm, going to send off my injectors if the injectors seem like a possible cause

Re: Y8 Timing
 

I sent them off to www.injectorservices.com and they did an awesome job. Shipped back the same day they received them,and they came back looking brand new. The flowcharts show them all within 1.9% of eachother. Best of all, it fixed my fueling problems...withthe new injectors in the car runs mint

Re: Y8 Timing
 

Crazy.

Re: Y8 Timing
 

well my car has been down for about a month and is running crazy rich again. ~10 AFR under most throttle. tried several maps including my original basemap. tried maps for my moto and the stock map so its not a map problem. injectors are recently serviced so they should be good. any ideas on the problem? could a loose wire or something with the ecu cause this?

Re: Y8 Timing
 

Do resistor boxes go bad? I was painting my car and doing body work, and am now quite eager to get this fixed and drivable again. I don't really know where to start from here

Re: Y8 Timing
 

It is also making an odd noise. like metal clanging against metal. almost like something is tightened enough. i thought it was some real loud valve ticking, but i just did an adjustment and its still there. I pulled the vtec solenoid and no debris in the filter. ill try to gtet a recording of the sound if needed

Re: Y8 Timing
 

Here's the clip: http://www.codyberman.com/car.wav

No throttle. the pulsing sound is the car wanting to die from being so rich. then at the very end i revved it a bit and the noise subsides a little

Re: Y8 Timing
 

JD what MAP sensor is your tune set for. 2.5bar? We found the noise. The flywheel teeth are coming apart from the aluminum part of the flywheel :-X

Re: Y8 Timing
 

yea...rawr came over and gave me a hand. it seems that im a total dumbass and completely screwed up the fuel mult on the map i thinik,but the noise is certainly from the flywheel.

if u grab ahold of the teeth and shake em around.

Re: Y8 Timing
 

Yeah, I wasn't reading anything that made me go "whoa," and the .wav sounded like open dp + exhaust ticking.

I should have both stock MAP sensor and 2.5 bar Y8 tunes up on xeno's site. Crome 1.2.0.24 (NOT 1.2 Final, that is a glitchy piece of poop last I heard) with FVFT 1.99RC4 and ABT+ 2.0.

Re: Y8 Timing
 

I also thought it was the downpipe ticking on something when the engine started to bog. It also kinda sounded like it was coming from the turbo until i got under the car and could hear it was the fly wheel. The teeth on the flywheel are litterly loose and jiggling around, seperate from the alumnium.

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What brand flywheel?

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I'm not sure. He got it from lsd.

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It's whatever lsd sells, although mike has been awesome thus far, and very willing to replace it. thumbs up to lsd.

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Yah him and TTs FTW.

Re: Y8 Timing
 

Okay. finished up the clutch job, so all that shiz is done. Now it's just running ultra rich. . When ever i change the fuel multiplier from 550 (old) to 450(new) and save it reverts back to 240(old) 196(new).. could that be a problem? otherwise, any ideas on what to try to see why its running so ------- rich?

btw, using j davis' map with the same software versions he is running