Very weird problem with air fuel experts inside please
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Very weird problem with air fuel experts inside please Some background info:
My car just got a basic fuel system installed with a Racetronix P&P -6 lines for supply and return, RC 50 lb injectors, Aeromotive boost sensitive rising rate regulator and FAST injector rails.
Now here is where it gets weird.. Under w.o.t. the car is going rich and under part throttle its going very lean. According to the shop they're adding 15-20% more fuel and its still lean on part throttle.
What would cause this happen? This seems pretty strange to me.
My car just got a basic fuel system installed with a Racetronix P&P -6 lines for supply and return, RC 50 lb injectors, Aeromotive boost sensitive rising rate regulator and FAST injector rails.
Now here is where it gets weird.. Under w.o.t. the car is going rich and under part throttle its going very lean. According to the shop they're adding 15-20% more fuel and its still lean on part throttle.
What would cause this happen? This seems pretty strange to me.
Last edited by Got Me SOM; Mar 10, 2006 at 06:12 PM.
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Tim I'll be back this weekend, I'd like you to take a look at it. You know where its at. Hopefully they figure it out enough to where I can drive it safely enough without fearing it'll blow up, lol.
Thanks!
Thanks!
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make sure the shop knows that the original LS1 regulator is constant(edited), and that your new one is boost refrenced. The VE table is gonna look preatty funky because of this.
Last edited by Spenser309; Mar 11, 2006 at 05:47 PM. Reason: constant vs linear
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found out the regulator isn't hooked up as boost dependent. that should make things easier. I'm thinking the injector flow rate is wrong that's why its all screwed up.
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Originally Posted by Got Me SOM
found out the regulator isn't hooked up as boost dependent. that should make things easier. I'm thinking the injector flow rate is wrong that's why its all screwed up.
Tim
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Thanks for the 411.
ya i'm gonna have to sit down with Tim or someone else and go thru it all.
The car is running like 10.5:1 at w.o.t and the part throttle is off. I hope this **** gets fixed right before I pick the car up.
the good thing is the car is making more power than before.
ya i'm gonna have to sit down with Tim or someone else and go thru it all.
The car is running like 10.5:1 at w.o.t and the part throttle is off. I hope this **** gets fixed right before I pick the car up.
the good thing is the car is making more power than before.
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Ryan I may take you up on that. I actually want to put a wideband on the car and drive it/tune it on the street. My friend Lou did that and my car picked up 4 mph but merely putting the right injector values in and changing the shift points.
I just want to get the car back and feel the new power, I'm getting antsy now.
When ya gonna put your Vortech kit on??
I just want to get the car back and feel the new power, I'm getting antsy now.
When ya gonna put your Vortech kit on??
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Originally Posted by Spenser309
some people just dont hook up vacum to the regulator, you may want to do that.
so looks like i'm gonna have to look at the VE table, PE table, injector values.
Might as well dial in the shift points too. The hot start sucks big ballz, takes me like 5 times to start and basically i just have to throw it in gear and go and even still it will stall..
I've noticed my mileage has really gone to ****, i know my part throttle tuning was off on my last fuel system setup.
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**update
I can't fucken believe this. The tuner said there is some kind of problem with the injectors. I told them that you need to change the injector flow rate, he was like ya ya I did, I changed this and that and couldn't get to run right, then he said he swapped my old injectors back in and the car is running fine...
Well duh!!! That's what the old tune was setup to run on... This is beyond frustrating. So the tuner said there's something wrong with the injectors and suggested two options.. He said I put your old injectors and see what it does.. ( ehhhh wrong answer they were already maxing out) or put some mototron 60's in and try that..
Well I told him to get the 60's overnighted and get the car done cause I want to pick her up this weekend. The tuner is going away for the weekend...
Now let me reitterate by saying the 50 lber's I had were in a friends car and they were running fine, now all of a sudden they aren't... He asked me if I knew how long they were laying around I said I dunno but I wasn't aware that injectors would go bad just laying around..
so more money I have to spend to get this fucken thing running right. And I guarantee it still won't be tuned right so I'll have to go thru it AFTER its supposedly tuned..
I can't fucken believe this. The tuner said there is some kind of problem with the injectors. I told them that you need to change the injector flow rate, he was like ya ya I did, I changed this and that and couldn't get to run right, then he said he swapped my old injectors back in and the car is running fine...
Well duh!!! That's what the old tune was setup to run on... This is beyond frustrating. So the tuner said there's something wrong with the injectors and suggested two options.. He said I put your old injectors and see what it does.. ( ehhhh wrong answer they were already maxing out) or put some mototron 60's in and try that..
Well I told him to get the 60's overnighted and get the car done cause I want to pick her up this weekend. The tuner is going away for the weekend...
Now let me reitterate by saying the 50 lber's I had were in a friends car and they were running fine, now all of a sudden they aren't... He asked me if I knew how long they were laying around I said I dunno but I wasn't aware that injectors would go bad just laying around..
so more money I have to spend to get this fucken thing running right. And I guarantee it still won't be tuned right so I'll have to go thru it AFTER its supposedly tuned..
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Originally Posted by Got Me SOM
**update
I can't fucken believe this. The tuner said there is some kind of problem with the injectors. I told them that you need to change the injector flow rate, he was like ya ya I did, I changed this and that and couldn't get to run right, then he said he swapped my old injectors back in and the car is running fine...
Well duh!!! That's what the old tune was setup to run on... This is beyond frustrating. So the tuner said there's something wrong with the injectors and suggested two options.. He said I put your old injectors and see what it does.. ( ehhhh wrong answer they were already maxing out) or put some mototron 60's in and try that..
Well I told him to get the 60's overnighted and get the car done cause I want to pick her up this weekend. The tuner is going away for the weekend...
Now let me reitterate by saying the 50 lber's I had were in a friends car and they were running fine, now all of a sudden they aren't... He asked me if I knew how long they were laying around I said I dunno but I wasn't aware that injectors would go bad just laying around..
so more money I have to spend to get this fucken thing running right. And I guarantee it still won't be tuned right so I'll have to go thru it AFTER its supposedly tuned..
I can't fucken believe this. The tuner said there is some kind of problem with the injectors. I told them that you need to change the injector flow rate, he was like ya ya I did, I changed this and that and couldn't get to run right, then he said he swapped my old injectors back in and the car is running fine...
Well duh!!! That's what the old tune was setup to run on... This is beyond frustrating. So the tuner said there's something wrong with the injectors and suggested two options.. He said I put your old injectors and see what it does.. ( ehhhh wrong answer they were already maxing out) or put some mototron 60's in and try that..
Well I told him to get the 60's overnighted and get the car done cause I want to pick her up this weekend. The tuner is going away for the weekend...
Now let me reitterate by saying the 50 lber's I had were in a friends car and they were running fine, now all of a sudden they aren't... He asked me if I knew how long they were laying around I said I dunno but I wasn't aware that injectors would go bad just laying around..
so more money I have to spend to get this fucken thing running right. And I guarantee it still won't be tuned right so I'll have to go thru it AFTER its supposedly tuned..
I spent the afternoon today fixing a tune that for some reason couldn't be done properly after multiple attempts (same tuner you are using). In just a few hours I had the car starting perfectly (would want to stall when going into drive or reverse), had the VE table recalibrated, MAF table recalibrated, A/F ratios on the money (actual AFR = PE commanded AFR), LTrims at 0, and no more part or full throttle pinging (it was one of the worst I've ever heard.. not exaggerating).
It all boils down to using the right tools to get it done. You can't tune MAF or VE tables without hooking up a wideband and having that synced to the other data.
Tim