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Old 05-28-2009, 02:56 PM   #1 (permalink)
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Default D16y8 Redline Issue

OK, i have a d16y8 in my eg sedan. The motor in it before was a d15b. It red lined at 6500. My y8 supposedly has a red line of 7200, but when im driving, it red lines at 6500. Is my tach off? Do i need to have it tuned? Raise it in the ecu? The ecu i'm running is the factory one from the d15b. What is the deal? My vtec kicks in at 5600, then in like 1second i'm at 6500, and its time to shift. the extra 700rpm's isn't much, but its something. Help me out here.
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Old 05-28-2009, 03:02 PM   #2 (permalink)
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Originally Posted by bibby View Post
OK, i have a d16y8 in my eg sedan. The motor in it before was a d15b. It red lined at 6500. My y8 supposedly has a red line of 7200, but when im driving, it red lines at 6500. Is my tach off? Do i need to have it tuned? Raise it in the ecu? The ecu i'm running is the factory one from the d15b. What is the deal? My vtec kicks in at 5600, then in like 1second i'm at 6500, and its time to shift. the extra 700rpm's isn't much, but its something. Help me out here.
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Old 05-28-2009, 03:25 PM   #3 (permalink)
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ya i would get a ecu chipped and run a y8 map.
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Old 05-28-2009, 03:26 PM   #4 (permalink)
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Did you change the ECU? If you don't thas the reason.

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Old 05-28-2009, 03:50 PM   #5 (permalink)
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What ecu would I change it to? I got the one for the engine, but it won't plug into my harness.

I can just have a y8 map pit in my ecu? How do Ito about doing that?
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Old 05-28-2009, 04:14 PM   #6 (permalink)
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just find someone to chip the ecu you have now, and put the d16y8 map on it. Ya the stock y8 ecu is obd2 and will not plug into a obd1 harness.
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Old 05-28-2009, 06:41 PM   #7 (permalink)
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OK, so i can order the chipping kit with the d16y8 basemap. Gonna run about 30bucks. Then once i chip it and install it, will i need to have it tuned, or will it be good to go?

This here, then follow the DIY.
http://www.xenocron.com/catalog/chip...cus-p-277.html

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Old 05-29-2009, 04:20 AM   #8 (permalink)
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Originally Posted by bibby View Post
OK, so i can order the chipping kit with the d16y8 basemap. Gonna run about 30bucks. Then once i chip it and install it, will i need to have it tuned, or will it be good to go?

This here, then follow the DIY.
Xenocron Tuning: Chipping Kit w/ SST Chip (OBD1 ECUs) USDM Kit & JDM Kit #OBD1-SST
not really if everything is stock. but ive found out that those basemaps for y8s suck compared to the actual p2p ecu.
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Old 05-29-2009, 04:59 AM   #9 (permalink)
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yahh its not going to change if the computer doesnt tell it to. chip it, get a stock y8 map put on, and you will have your 7200 rpm! while there put in launch control, it helps if u go to the track
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Old 05-29-2009, 05:45 AM   #10 (permalink)
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you also can get from Rywire - Online Store the conversion harness to install OBDII ECU in the OBDI wireharness.
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Old 05-29-2009, 07:53 AM   #11 (permalink)
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So its cheaper, and i can definatly do the ecu chipping. That seams like the way to go unless the basemap i get from xenocron is no good. Plus my ecu will be chipped for further mods. I think im gonna go that way.

Can anybody else confirm that the xenocron basemap i can get with the chipping kit is no good?
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Old 05-29-2009, 11:06 AM   #12 (permalink)
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do you know of anyone that can chip your ecu? b/c its not a very easy task. Might be a good idea to send it to xenocron and have them do it.
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Old 05-29-2009, 11:39 AM   #13 (permalink)
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I ran my Y8 on a S300 with a Y8 basemap and it didn't suck.

I used that same basemap to street tune my D18 and that didn't suck but I didn't push it.

It's a good idea to just send your ECU to Chris at Xenocron and tell him what you're trying to do. I'm sure he could provide a decent basemap.
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Old 05-30-2009, 06:47 AM   #14 (permalink)
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what ecu is in there now?
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Old 05-30-2009, 07:45 AM   #15 (permalink)
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Originally Posted by z6civicex View Post
do you know of anyone that can chip your ecu? b/c its not a very easy task. Might be a good idea to send it to xenocron and have them do it.
I read the DIY and looked at all the pics. I dont understand what is so hard about it. If you can solder then thats all there is to it. Now if you cant solder then i could see the problem.

PS: I manage a RadioShack, so I'm pretty familier with soldering and small electronic work. This will be cake for me.


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I ran my Y8 on a S300 with a Y8 basemap and it didn't suck.

I used that same basemap to street tune my D18 and that didn't suck but I didn't push it.

It's a good idea to just send your ECU to Chris at Xenocron and tell him what you're trying to do. I'm sure he could provide a decent basemap.
The chipping kit im going to order from xenocron, i can pay an extra 14$ to get a y8 basemap installed. Thats the route im going to take.

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what ecu is in there now?
The one that came in the car for the d15b. I'm gonna chip it and install the y8 basemap.
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Old 05-30-2009, 09:07 AM   #16 (permalink)
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then i say go for it
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Old 05-30-2009, 09:25 AM   #17 (permalink)
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It's probably because your T-stat is stuck open or you have an incorect T-stat installed. There is a lower rev limit (NOT the same thing as a red line) when the ECU doesn't "see" the engine as fully warm.
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Old 05-30-2009, 09:56 AM   #18 (permalink)
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The one that came in the car for the d15b. I'm gonna chip it and install the y8 basemap.

whats the code on the side....not all ecus are chippable
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Old 05-30-2009, 10:12 AM   #19 (permalink)
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Oh. I'll look when i get home today.
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