Problem with car. Could be Kpro related?

jsfwds2k · Post by **jsfwds2k** » Mon Oct 11, 2004 11:26 am

Well I haven't gotten my issue resolved on clubrsx so I figured this would be the place to go. Here is a link to the thread I started about the problem. The last page is probably the only relevant info.

http://forums.clubrsx.com/showthread.php?t=189224

Thanks in advance for the help. Let me know if you think this isn't hondata related. It could be supercharger or injector or fuel pump related.

Jamie

Post by **Hondata** » Mon Oct 11, 2004 9:10 pm

Please, post a summary here.

jsfwds2k · Post by **jsfwds2k** » Tue Oct 12, 2004 3:04 pm

Okay. I will try to make this as accurate and thorough as I can. For some reason I have a bump/ rev limiter type feeling when I take the car above 8000 rpm's. I guess I should tell you what all I have done. Well here it goes: I have the JRSC, Hondata Kpro and 550 cc injectors. I am running a 9 PSI(actually 10) upgrade pulley on the blower. I have an Apexi N-one cat back, and stock header and cat. I was running the 550cc 9PSI cal on the kpro. I then tried out the 650cc 10 PSI cal and it seemed much smoother after I adjusted the fuel. After a little while I noticed the belt was slipping when I did a datalog. So I tightened the belt up. After I did that, I experienced this wierd type of feeling at high rpm's. Kind of like a softer rev limiter type feeling. Not as harsh. So I thought it could be the boost cut. So I turned the boost cut off as per directions by Conrad. It still did it. SO then I did a datalog and found that I was going really lean at the time this bump occured. So I added a bunch of fuel, like 15 % and it didn't help. Thinking it was the cal I was using I switched back to the 550 cc cal. It still did it. Also funny thing is, I don't lose boost during this time. It stays at around 10.1-10.2 psi. Then I looked into a fuel filter and found that we have a maintenance free filter. So I wondered if it could be the pump or injectors? IS there anyway to check either of these? Oh and by the way, If I take the car slowly to 8800 rpm's I don't have this bump. It is only when I hit about 3/4 throttle and more. If you need any datalogs they are in the link above. The cal is also. Once agian Thanks for the help and let me know if you need any other info to determine the problem.

P.S.- I just noticed this is in the wrong forum. It chould be with Kpro I guess. SOrry.

Jamie

turbosi92 · Post by **turbosi92** » Wed Oct 13, 2004 12:00 pm

jsfwds2k wrote:Okay. I will try to make this as accurate and thorough as I can. For some reason I have a bump/ rev limiter type feeling when I take the car above 8000 rpm's. I guess I should tell you what all I have done. Well here it goes: I have the JRSC, Hondata Kpro and 550 cc injectors. I am running a 9 PSI(actually 10) upgrade pulley on the blower. I have an Apexi N-one cat back, and stock header and cat. I was running the 550cc 9PSI cal on the kpro. I then tried out the 650cc 10 PSI cal and it seemed much smoother after I adjusted the fuel. After a little while I noticed the belt was slipping when I did a datalog. So I tightened the belt up. After I did that, I experienced this wierd type of feeling at high rpm's. Kind of like a softer rev limiter type feeling. Not as harsh. So I thought it could be the boost cut. So I turned the boost cut off as per directions by Conrad. It still did it. SO then I did a datalog and found that I was going really lean at the time this bump occured. So I added a bunch of fuel, like 15 % and it didn't help. Thinking it was the cal I was using I switched back to the 550 cc cal. It still did it. Also funny thing is, I don't lose boost during this time. It stays at around 10.1-10.2 psi. Then I looked into a fuel filter and found that we have a maintenance free filter. So I wondered if it could be the pump or injectors? IS there anyway to check either of these? Oh and by the way, If I take the car slowly to 8800 rpm's I don't have this bump. It is only when I hit about 3/4 throttle and more. If you need any datalogs they are in the link above. The cal is also. Once agian Thanks for the help and let me know if you need any other info to determine the problem.

P.S.- I just noticed this is in the wrong forum. It chould be with Kpro I guess. SOrry.

Jamie

Did you try anything with the timing (along with the fuel)?

This sounds just like the bump we had in the earlier version of the S200 so
ftware. Anyone else report this Doug?

jsfwds2k · Post by **jsfwds2k** » Wed Oct 13, 2004 1:37 pm

turbosi92 wrote:
jsfwds2k wrote:Okay. I will try to make this as accurate and thorough as I can. For some reason I have a bump/ rev limiter type feeling when I take the car above 8000 rpm's. I guess I should tell you what all I have done. Well here it goes: I have the JRSC, Hondata Kpro and 550 cc injectors. I am running a 9 PSI(actually 10) upgrade pulley on the blower. I have an Apexi N-one cat back, and stock header and cat. I was running the 550cc 9PSI cal on the kpro. I then tried out the 650cc 10 PSI cal and it seemed much smoother after I adjusted the fuel. After a little while I noticed the belt was slipping when I did a datalog. So I tightened the belt up. After I did that, I experienced this wierd type of feeling at high rpm's. Kind of like a softer rev limiter type feeling. Not as harsh. So I thought it could be the boost cut. So I turned the boost cut off as per directions by Conrad. It still did it. SO then I did a datalog and found that I was going really lean at the time this bump occured. So I added a bunch of fuel, like 15 % and it didn't help. Thinking it was the cal I was using I switched back to the 550 cc cal. It still did it. Also funny thing is, I don't lose boost during this time. It stays at around 10.1-10.2 psi. Then I looked into a fuel filter and found that we have a maintenance free filter. So I wondered if it could be the pump or injectors? IS there anyway to check either of these? Oh and by the way, If I take the car slowly to 8800 rpm's I don't have this bump. It is only when I hit about 3/4 throttle and more. If you need any datalogs they are in the link above. The cal is also. Once agian Thanks for the help and let me know if you need any other info to determine the problem.

P.S.- I just noticed this is in the wrong forum. It chould be with Kpro I guess. SOrry.

Jamie
Did you try anything with the timing (along with the fuel)?

This sounds just like the bump we had in the
earlier version of the S200 software. Anyone else report this Doug?

I haven't tried anything with timing because I haven't had any knocks on my datalogs.

Jamie

turbosi92 · Post by **turbosi92** » Wed Oct 13, 2004 2:50 pm

You would need to add timing not take it away. Just a thought.

jsfwds2k · Post by **jsfwds2k** » Wed Oct 13, 2004 2:58 pm

turbosi92 wrote:You would need to add timing not take it away. Just a thought.

Well I don't know why it would be off. It only seems to do it if I go over 9.5 PSI. If I don't have the belt tight or if I take it slowly it won't do it. Another thing is that this happens in the 650cc 10 PSI base map and the 550 cc 9 PSI base map. I don't know. I am lost. I guess I should take it to a mechanic and see what he says.

Jamie

turbosi92 · Post by **turbosi92** » Wed Oct 13, 2004 3:00 pm

jsfwds2k wrote:
turbosi92 wrote:You would need to add timing not take it away. Just a thought.
Well I don't know why it would be off. It only seems to do it if I go over 9.5 PSI. If I don't have the belt tight or if I take it slowly it won't do it. Another thing is that this happens in the 650cc 10 PSI base map and the 550 cc 9 PSI base map. I don't know. I am lost. I guess I should take it to a mechanic and see what he says.

Jamie

All of this is happening on a basemap? Or a fully tuned map?

jsfwds2k · Post by **jsfwds2k** » Wed Oct 13, 2004 3:34 pm

base map.

Jamie

turbosi92 · Post by **turbosi92** » Wed Oct 13, 2004 5:19 pm

jsfwds2k wrote:base map.

Jamie

It needs tuned. That should solve it.

jsfwds2k · Post by **jsfwds2k** » Wed Oct 13, 2004 8:15 pm

If all it needed was tuned, wouldn't there be more people with this problem? And I don't think it would only do it when I hit around 10 PSI if all it needed is tuned. Sorry I just don't think that is it. Thanks for the help. I may need to put it on a dyno to find the problem though.

Jamie

jsfwds2k · Post by **jsfwds2k** » Wed Oct 13, 2004 8:17 pm

Doug? Anyone? Suggestions on what MAY be wrong here? Anything I can test or try out?

Jamie

turbosi92 · Post by **turbosi92** » Wed Oct 13, 2004 8:46 pm

jsfwds2k wrote:Doug? Anyone? Suggestions on what MAY be wrong here? Anything I can test or try out?

Jamie

It needs tuned. That will help a ton if not fix it.

Post by **Hondata** » Thu Oct 14, 2004 9:52 pm

It's hard to diagnose what the problem might be. If there is a misfire at high rpm then the A/F will show lean (from unburnt mixture). What sort of engine is this?

jsfwds2k · Post by **jsfwds2k** » Fri Oct 15, 2004 10:53 am

It is a K20A2. Sorry I should have mentioned that. I also have some datalogs of it doing this. What would make it do this when I am only about 75% throttle or more? If I just go throught the gears slowly and take it all the way up to 8800 then it doesn't do it. The datalogs are posted in the link above along with calibrations.

Jamie