stumbling after 2nd turbo spools
06-24-04, 03:19 PM
#1
Da Monee Pit
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stumbling after 2nd turbo spools
Car runs fine till the second turbo comes on but starts to kinda stumble about 5k rpm and then surges and doesn't want to wind up. I just installed a HKS DownPipe. Rekon my gas isn't up to par? It's only 90 octane as thats all the station had I pulle dinto and I needed gas.
Maybe adding 5 gallons of aviation fuel would help or is it something else?
It ran fine before the DP install.
Maybe adding 5 gallons of aviation fuel would help or is it something else?
It ran fine before the DP install.
06-24-04, 04:03 PM
#3
RX-7 Bad Ass
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How fresh are your spark plugs? I'd suspect ignition.
Dale
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06-24-04, 04:18 PM
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il Cosa Nostra e vivo!!
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Originally posted by West TX RX-7
about 11-12 psi of boost
about 11-12 psi of boost
What other engine mods does your car have?
06-24-04, 04:46 PM
#6
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oh, i just checked it on the way home and it's boosting to about 14-15 and thats when it starts to stumble.
Only other mods I know of are a HKS catback and a K&N. It had a Greddy E-manage on it before I bought it but it was setup for sea level. I'm 3300 above. I have the E-Manage, just haven't put it yet or messed with it.
Only other mods I know of are a HKS catback and a K&N. It had a Greddy E-manage on it before I bought it but it was setup for sea level. I'm 3300 above. I have the E-Manage, just haven't put it yet or messed with it.
Last edited by West TX RX-7; 06-24-04 at 04:55 PM.
06-24-04, 04:50 PM
#7
Call me gramps!
Originally posted by West TX RX-7
oh, i just checked it on the way home and it's boosting to about 14-15 and thats when it starts to stumble.
oh, i just checked it on the way home and it's boosting to about 14-15 and thats when it starts to stumble.
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06-24-04, 04:51 PM
#8
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damn 14-15 pounds, hopefully you have an a-m ecu. Shame on you if you don't. Fd's aren't like the FC's where I heard the stock ecu is capable of more. You must have that new anti-det-device everyones talking about.
Last edited by lopedl; 06-24-04 at 04:54 PM.
06-24-04, 04:59 PM
#9
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I usually run 93 exclusively but i needed gas and they only had 90. I just installed the DP today. It was only boosting 10-11 before I put it on.
Should I take it back off and put the stock precat back on till I get a piggyback?
Should I take it back off and put the stock precat back on till I get a piggyback?
06-24-04, 05:03 PM
#13
Call me gramps!
I would reccomend you try to make a home depot boost controller for the time being, and see if that will be able to control your boost. I wouldn't boost again until you have some decent fuel/boost control in that car.
09-08-18, 06:09 PM
#14
Junior Member
Had the exact same problem. Turned out to be a leak in the pressure side if the tca and also a sticky turbo control solenoid. I recommend pressure testing the tca and upgrading the stock solenoid to a mac valve or similar. I dont believe the stock solenoid was ever up to the task of managing pressure. I also upgraded the cca solenoid and the turbo control 2 solenoid just to increase reliability of the system.
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