Jspec swap complete, some problems
#1
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Jspec swap complete, some problems
I just finished my Jspec swap last night. I go to take it out for a spin, and notice that when the secondaries kick in, the car bucks bad. Also, it backfires more than anything ever. I have to actually TRY to keep it from backfiring. I like it, but, I'm sure the cops won't. Just a few questions. My mods are K&N filter, 3" turbo back with pre-silencer, re-wired Walbro, and I ported the wastegate, it holds steady at about 5 p.s.i. until it doesn't want to accelerate smoothly. I havean SAFC II in it, but I didn't tune it at all. I put it as a 4 cylinder, and the arrow is pointing down and to the right.(I think that's what I was told to do) I don't remember any of the other settings on it, so, I honestly couldn't tell you. I left everything at 0, though. So, any tips with that would be very helpful, seeing as I don't know what I'm doing with it. I'm going to bring it to a dyno in town here, and get it tuned. Also, am I safe for now using the stock 550 secondaries? Or should I upgrade to 720's a.s.a.p.? And, if I'm safe with the 550s, what kind of boost can I run SAFELY with them? Sorry for the lack of paragraphs and long post, any and all help is greatly appreciated.
#2
seven-less
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well, are your secondaries cleaned? no, you don't have to upgrade your inj... save that for later... or you might be running too rich. get it tuned and/or clean your injectors and see how it goes...
also check your wiring for the pump.
also check your wiring for the pump.
#3
if injectors have been cleaned and bucking still exists, re-grounding ecu will help
you are probably running rich w/ the walbro pump and your mods. the pump raises the fuel pressure ~5psi
what do you mean by "it holds steady at about 5 p.s.i. until it doesn't want to accelerate smoothly" ?
how does it idle?
you are probably running rich w/ the walbro pump and your mods. the pump raises the fuel pressure ~5psi
what do you mean by "it holds steady at about 5 p.s.i. until it doesn't want to accelerate smoothly" ?
how does it idle?
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No, no precats, just the pre-silencer an muffler. 3" all the way back from the DP. With the 5 p.s.i. I was just stating that it held 5 pounds of boost, so the wastegate was ported and everything. Up until the bucking, it held right there, but afterwards, it's hard to tell. I have not cleaned my injectors, which I should probably do. Will running a bottle of injector cleaner work? Or would it be best to pull them and cean them?
The idle is......nonexistant, lol. I have to keep on the gas in order to keep it running, and it's never really steady, I associated that with the probably running rich. So, I dismissed the idle for right now. I adjusted the TPS as best asI could. So, I'm thinking doing the injector cleaner.
The idle is......nonexistant, lol. I have to keep on the gas in order to keep it running, and it's never really steady, I associated that with the probably running rich. So, I dismissed the idle for right now. I adjusted the TPS as best asI could. So, I'm thinking doing the injector cleaner.
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Your motor may have been sitting in storage for some time.
My J-spec had to run several hours before it would idle smooth.
This includes putting a few ounces of MMO through it before startup.
After two days, it ran perfect.
My J-spec had to run several hours before it would idle smooth.
This includes putting a few ounces of MMO through it before startup.
After two days, it ran perfect.
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#8
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Originally posted by JoeHawk
Kool, thanks. Wht do you mean by MMO?
Kool, thanks. Wht do you mean by MMO?
It's a cross between high detergent ATF & TC3 (That's auto trans fluid & 2-stroke oil)
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Yea, I kept blowing my 15 amp engine fusetoday after work. I would change it, it would start, rev up, and die, and blow a fuse. I switched the arrow to pointing up, and it's fixed. I didn't know what to set the sensor # at, so, 5 it is. What affect does that have on things? Sorry, I know nothing about the safc or tuning. I'm a total n00b in that field. I tried reading and understanding the safc manual, and it was like reading Chinese. Thanks for the help everyone.
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