It is official. When I get my mustang, I will not supercharge it.Ive read the whole thread and I think I am absolutely terrified of supercharging it. I wish you the best of luck in this.
Kenne Bell should fly you up and look at this. Good god, the problems stemming from this "well engineered" kit would have pissed me off to the high heavens. I dont think I could adequately describe through text how PISSED I would be. For that, I have to commend your IMMENSE amount of patience.
It is official. When I get my mustang, I will not supercharge it.Ive read the whole thread and I think I am absolutely terrified of supercharging it. I wish you the best of luck in this.
Kenne Bell should fly you up and look at this. Good god, the problems stemming from this "well engineered" kit would have pissed me off to the high heavens. I dont think I could adequately describe through text how PISSED I would be. For that, I have to commend your IMMENSE amount of patience.
Don't be scared just get the kit from a reputable company like Brenspeed or JDM and life will be good. I have the Saleen setup through Breenspeed and it has been hassle free.
I've been reading this entire thing also, and frankly, I'm impressed by your patience. I'm curious to see what your mechanic friend says... I need an update!
I suppose for those following this thread I can update here.
I tried a new MAF sensor and a new fuel filter with no changes in the behavior.
Then the Aeroforce Interceptor was reading the oil temp incorrectly, and the numbers coincided with the problems, but it turns out the gauge just reads it incorrectly and it was coincidence. No help there.
I also monitored FRP and IAT and they read properly.
The mechanic took the car yesterday, and when he got home he texted me "Okay, how much you want for it!".. haha.. I laughed and shot him a price close to what I've paid for it and he decided as much as he liked it he wasn't going to pay that much for it. I have to say though, for someone who builds 700 hp imports, I like that he was impressed with and enjoys driving the mustang.
Anyway, he datalogged a little this morning, and we already found something not right.
A little background though.. The AF gauge has been reading lean when it bogs, which lead me to believe it was a fuel issue of some sort, or a vacuum leak of some sort. However, I realized that the way an AF gauge reads is by monitoring the oxygen in the exhaust, so I got to thinking if the car misfires, unburnt fuel and oxygen go into the exhaust, and an AF gauge will read lean, not rich, even though there is a ton of fuel in there too.. So that put it all in a new light, and I started thinking maybe I had a bad coil or something, and it was misfiring until it warmed up and the problem in the coil went away.
So jump ahead to this morning, and my mechanic is watching the Long Term Fuel Trim. Most engines start at around -4% and once warm move to around 3 or 4%. Mine starts at zero. That in itself is a question because maybe it was programmed to start at zero, or maybe the computer is not holding memory after a few hours.
Then, the LTFT goes to 17-18%, which is WAY rich. I had thrown a rich code when driving cold last week, which at the time made NO sense, since the AF gauge was showing lean when it bogged and sputtered. The tuner at KB said that can't happen, it won't throw a code when in open loop mode, so I am waiting for a return email from him with his thoughts now. The mechanic got a rich code again this morning.
Now, we are thinking that it is going super rich, which bogs it down at lower rpm's, and possibly throws a rich code at WOT. If it is rich enough, it will misfire, and unburnt oxygen will enter the exhaust and show up on the AF gauge as lean. All the symptoms match the problem, but the question is, what is the cause of the LTFT going so rich?
Once it warms up and goes into closed loop fuel mode, it goes to 3-4% LTFT and runs fine, with the exception of the occasional oddity at idle, which may just be a completely seperate problem.
So at this point he is going to continue to datalog the problem, and I am waiting to hear back from KB on a possible cause. It feels like we are finally getting close to solving this mystery.
I think we are going to smoke the engine just to make sure there is no vacuum leak, but at this point I would be surprised if there was. My mechanic just bought a really good smoker last month and likes how easy it makes it to find vacuum leaks.
Oh, and in the mean time, I don't remember if I mentioned the supercharger was leaking oil at the front of the snout, but I got it replaced and now the new one is leaking too. I am a little upset there, although I heard they had a bad run of seals, and my luck is holding true so that everything that could go wrong is going wrong. Oh, and now my rear end is making noise.. either I got a bad u-joint or my pinion angle is way off from the recent hardware changes back there and it is screaming when the driveline is neutral (no acceleration or deceleration, right in the middle).
Funny thing is, when the mechanic jokingly offered to buy the car, I was serious about selling it to him. At this point if I could get a good part of what I have into it back out, I would sell it and start a new project. When it is warmed up and running right, it is incredible fun to drive, but between the problems and the fact that sooner or later I am going to get into trouble with it, I would sell for the right price. I really want to build a factory five cobra replica..
I will continue to update here as new stuff comes up. I have 2 events this weekend and hope to have it all worked out by then.. One event is "escorting" the cheerleaders for the local arena football team into the stadium in front of a packed house for the playoffs. It would be embarrassing to have my car cough and sputter and stall in front of the whole arena.. haha..
I wouldn't let my problems discourage anyone from doing a supercharger. I look at it this way.. I was so lucky to get the deal I got, it was just karma righting itself to give me the problems I am having.. nothing good can happen without something coming along to restore the balance.. hahaha... I would still do it over again, and still go with the KB.. although now that Techco has a quieter idle drive, it wouldn't be a bad choice if it were a couple grand cheaper...
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2006 GT Premium Vert, 5 spd, Tungsten Grey Show: Painted gloss black stripes, Street Scene Gen 1 body kit, side and hood scoops, CDC light bar, sequential tails, purple underglow, 8" shorty antenna, redline hood struts, Steeda Ultralights, 20" Chrome Killers, S.O.S. pillar & 3 gauges. Go: J&M LCA's & Adj. UCA, J&M Adj. Panhard, CHE LCA reloc brackets & torque limiters, 3.73 gears, Kenne Bell Stage 1 2.6l supercharger.
...440rwhp/401rwtq
There has got to be something really simple that we are missing on this. I just don't know what it could be. Maybe the fuel pressure sensor?
I hear ya.. I keep going over the install in my head trying to think of where else there might have been a mistake on my part. The Aeroforce interceptor gauge reads FRP from the OBD2 port at about 39-40 psi at idle, and when I hit boost you see it jump to about 60 for a brief moment as the BAP kicks in, then settles back to 35-45 at WOT. When the LTFT is high, the FRP is still at the same 39-40, so I tend to think it isn't the sensor.
I have asked Ken at KB if he can offer up opinions on what would cause the LTFT to go so high in open loop, and wait for his answer.
Last night, he returned my email and stated that it is correct for LTFT to be zero at startup, so that part is right. Unfortunately he basically said that "there are a lot of things going on" that can affect this, and didn't point to any one thing to check. He is willing to take a shot at programming this out, but something is causing it, and I would rather fix the cause than bandaid it with a tune. In the end it will be something simple, but only God knows what that is at this point. Hopefully something comes up today..
On a different note, they are sending me a new double lip seal for the snout. They offered to send a whole new drive again with the seal in it already, but Ken said the seal is easy to change, so no need to send the whole unit. I told him he better send more oil with it, I am about out between the leak and the first drive change.
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2006 GT Premium Vert, 5 spd, Tungsten Grey Show: Painted gloss black stripes, Street Scene Gen 1 body kit, side and hood scoops, CDC light bar, sequential tails, purple underglow, 8" shorty antenna, redline hood struts, Steeda Ultralights, 20" Chrome Killers, S.O.S. pillar & 3 gauges. Go: J&M LCA's & Adj. UCA, J&M Adj. Panhard, CHE LCA reloc brackets & torque limiters, 3.73 gears, Kenne Bell Stage 1 2.6l supercharger.
...440rwhp/401rwtq
I posted some stuff in some newer threads.. basically I got an SCT x3 from KB with 3 tunes to try and a request to datalog some pulls. I started datalogging and right away what I was seeing suggested a fuel delivery issue. I suspected the fuel pump and a forum member sent me his old one to try, but it didn't make any difference. I am now thinking I have a bad injector. I need to find someone with at least 4 39 lb cobra injectors lying around that I can borrow to try out. Seems my drivers side bank is the culprit, but it is so hard to say, I never get codes that point to anything in particular..
I get rich codes occasionally, but when the engine stumbles it is leaning out like it doesn't get any fuel.. very confusing.
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2006 GT Premium Vert, 5 spd, Tungsten Grey Show: Painted gloss black stripes, Street Scene Gen 1 body kit, side and hood scoops, CDC light bar, sequential tails, purple underglow, 8" shorty antenna, redline hood struts, Steeda Ultralights, 20" Chrome Killers, S.O.S. pillar & 3 gauges. Go: J&M LCA's & Adj. UCA, J&M Adj. Panhard, CHE LCA reloc brackets & torque limiters, 3.73 gears, Kenne Bell Stage 1 2.6l supercharger.
...440rwhp/401rwtq
Today mine did something like this. Started it up, everything seemed normal. Waited for the 20 sec afr countdown and idle to come down...drove outta garage, seemed normal still. Got out to road...seemed ok, got about 2 blocks down the road and was gonna give it a little more throttle and sputter cough. Turned around cuz I was gonna coma back and park it, by the time I got back it ran good. I'm hoping its nothing too hard to figure out. I'm gonna datalog tomorrow morning and hopefully catch it doing the same thing while recording. Its been running good for the last month or so. Just did this one other time but not quite to this extent.
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'08 GT premium 5 spd-- TVS2300 tuned by Tillmans CR
My girlfriend calls it a waste of money, but I see it as saving money(and time away from her) if I install it myself
Ironmike My car has done something like that. I would be cruising and then give it about 60% throttle and it will have a sputter or cough for a split second. It has happened three times and has not happened in 4 months. I forgot all about it until I read this. Other tha those three time my driveability is perfect even when the summer heat was bearing down.
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2005 Ford Mustang GT Torch Red Manual
Saleen Supercharger 3.4 pulley/Brenspeed Tune
FRPP Stingers Axleback Muffler System
CHE Lower Control Arms
Pro-5.0 Super Shifter
CDC Sequential Tail Lights
Best ET NA: 13.408 @ 105.31
Best SC: 12.6 @ 114 on Pirellis
