Breaking up in boost
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Breaking up in boost
2.0L turbo GSR. Hondata S300. The motor will not go over 4900 rpm/3# of boost. At that point it just breaks up and feels like it is hitting a rev limiter. This problem just started recently. I have already tried swapping the igniter, coil, and new plugs. I've tried the plugs gapped all the way down to 20 thou with no luck. I have tried both resistor and non resistor plugs in it. I don't feel it is tune related as the car has been running fine. The AFR is 12.3:1 at 3# when it is breaking up.
Any ideas?
Any ideas?
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Re: Breaking up in boost
this si the issue I as having when i was running the MSD dizzy. I recently have swapped to the t1 trigger, and all is well now man. I am not sure if this is your issue or not, but dam near the same issue I was having myself.
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Re: Breaking up in boost
Boost cut is set much higher. I checked the logs and it is not showing the ignition or fuel being cut when it breaks up.
Yeah it's fine. I had it apart when I swapped coils and when I swapped igniters. The cap and rotor look new.
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Re: Breaking up in boost
No it's not set there. I thought the same thing so we turned it up higher for now just to make sure that was not affecting it.
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Re: Breaking up in boost
I haven't tried it yet but I doubt that is the problem. The AFR looks perfect and it would be going lean if it was a fuel supply issue.
BKR7E normally but I also tried a heat range hotter in the non resistor plug with no change.
Today I tried a cap and rotor, new dist. housing, another coil. Still has the same problem. I pulled one of the turbo couplers off so it would not make boost. The car runs fine that way since there is no load and does not break up. As soon as it was hooked back up and saw 2# of boost it broke up again. I guess it only happens under a load. Any other ideas?
BKR7E normally but I also tried a heat range hotter in the non resistor plug with no change.
Today I tried a cap and rotor, new dist. housing, another coil. Still has the same problem. I pulled one of the turbo couplers off so it would not make boost. The car runs fine that way since there is no load and does not break up. As soon as it was hooked back up and saw 2# of boost it broke up again. I guess it only happens under a load. Any other ideas?
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Re: Breaking up in boost
damn...maybe it is tuning man..Im taken mine thursday to get tuned and everything
I haven't tried it yet but I doubt that is the problem. The AFR looks perfect and it would be going lean if it was a fuel supply issue.
BKR7E normally but I also tried a heat range hotter in the non resistor plug with no change.
Today I tried a cap and rotor, new dist. housing, another coil. Still has the same problem. I pulled one of the turbo couplers off so it would not make boost. The car runs fine that way since there is no load and does not break up. As soon as it was hooked back up and saw 2# of boost it broke up again. I guess it only happens under a load. Any other ideas?
BKR7E normally but I also tried a heat range hotter in the non resistor plug with no change.
Today I tried a cap and rotor, new dist. housing, another coil. Still has the same problem. I pulled one of the turbo couplers off so it would not make boost. The car runs fine that way since there is no load and does not break up. As soon as it was hooked back up and saw 2# of boost it broke up again. I guess it only happens under a load. Any other ideas?
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Re: Breaking up in boost
im telling you this sounds just like my issue i was having man my tuner said the magnetic rotor in the dizzy wasnt being picked up by the crank angle sensor. we scrapped the dizzy slapped a T1 cam trigger in and walla is perfect.
I hope you guys find the issue before you have more than you already have
I hope you guys find the issue before you have more than you already have
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Re: Breaking up in boost
yeah my s300 throws a code for the crank angle sensor. so it must be the dizzy? new one will be here monday!!!!
im telling you this sounds just like my issue i was having man my tuner said the magnetic rotor in the dizzy wasnt being picked up by the crank angle sensor. we scrapped the dizzy slapped a T1 cam trigger in and walla is perfect.
I hope you guys find the issue before you have more than you already have
I hope you guys find the issue before you have more than you already have
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Re: Breaking up in boost
Well, today we tried a completely new dist. and wires. Same issue. Had the tuner go back to the stock map and retune it just to see if it was the tune. It still would not go over 2.x# of boost w/o breaking up. Checked the base timing before and after the dist. swap and it looked perfect. Also, I thought maybe it could be related to the MAP sensor so we went back to the stock map and adjusted the settings accordingly. Still same issue. I'm starting to think something happened in the Hondata S300 box since there isn't much left in the ignition system to check.
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Re: Breaking up in boost
damn
Well, today we tried a completely new dist. and wires. Same issue. Had the tuner go back to the stock map and retune it just to see if it was the tune. It still would not go over 2.x# of boost w/o breaking up. Checked the base timing before and after the dist. swap and it looked perfect. Also, I thought maybe it could be related to the MAP sensor so we went back to the stock map and adjusted the settings accordingly. Still same issue. I'm starting to think something happened in the Hondata S300 box since there isn't much left in the ignition system to check.
#22
Re: Breaking up in boost
Seems like you have been checking everything, fuel, ignition, sensors. One sensor I didn't see mentioned was the TPS. Make sure that is not loose or reading the wrong voltage. Im guessing the S300 would tell you?
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Re: Breaking up in boost
try advancing the ignition at the distributor and do a pass if it makes a full pass then you know your timing maps are too conservative, and also try gapping the plugs down and check the spark plug wires.
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Re: Breaking up in boost
Plugs have been gapped from 28 thou all the way down to 15 thou. Same issue for all the gaps we tried. I really do not think it is the ignition map since the car ran perfect 5 days ago but I can give that a shot. I have checked pretty much ever thing I know of except the S300.
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Re: Breaking up in boost
u think the s300 is trashed?
TPS is ok. We checked that also but I forgot to mention it on here.
Plugs have been gapped from 28 thou all the way down to 15 thou. Same issue for all the gaps we tried. I really do not think it is the ignition map since the car ran perfect 5 days ago but I can give that a shot. I have checked pretty much ever thing I know of except the S300.
Plugs have been gapped from 28 thou all the way down to 15 thou. Same issue for all the gaps we tried. I really do not think it is the ignition map since the car ran perfect 5 days ago but I can give that a shot. I have checked pretty much ever thing I know of except the S300.