268 hp ????????????
03-11-2008 | 07:07 PM
#81
your injectors cant be maxed out my freind did head cam swap with stock injectors put down 396 at the wheels(after injector swap lost a couple ponys). the best thing i can tell you to do is take it to the track see what it runs ,dyno's lie tire slipeing bad dyno any thang is possible does it fell stronger know than before have you ever ran the car? either the tune is wack are the dyno is bad just worries me the tuner said you need injectors? dont sound rite.
03-11-2008 | 08:27 PM
#83
+1 do the full treatment theres a nice write up in the stickeys if you dont know how to do it properly because its not just hey lets put on in the oil and gas and be done... Oh and i would use z max that **** kicks ***! ive seen lab tests on how that actualy works and it uses the oil and makes it actualy penatrate the metal itself.
03-11-2008 | 09:20 PM
#85
My guess is that torque converter is a LOT bigger than you were guessing. A 3500 converter will not flash to 3500 under light throttle. Sounds a lot more like a 4800-5000RPM stall, and the chart would back that up.
If he didn't do much tuning on it, it is probably dumping fuel up top making the computer read a 92% duty cycle, and running that rich is going to kill your HP/TQ numbers up there, and seeing as he cut it off at 5300, he wouldn't have had much time to even be able to tell.
If you're doing injectors, I also vote for the 42#'s, but honestly, you probably don't NEED them right now...
If he didn't do much tuning on it, it is probably dumping fuel up top making the computer read a 92% duty cycle, and running that rich is going to kill your HP/TQ numbers up there, and seeing as he cut it off at 5300, he wouldn't have had much time to even be able to tell.
If you're doing injectors, I also vote for the 42#'s, but honestly, you probably don't NEED them right now...
03-11-2008 | 09:29 PM
#86
You REALLY need to find out what the AFR was around 5k on that pull. That will tell us a lot too. If it was like 10-11:1 with 92% injector, that IDC will drop a lot with some tuning. If it was struggling to stay 12.5-13.0 with an IDC that high, then you need more injector..
03-11-2008 | 09:37 PM
#87
i think some cars just dyno ridiculous low, my 2000 z28, with 224tr cam, 3800 fuddle, ud pully, ls6 intake pacesetter lt's, ORY, baseline dynoed 282hp over 299tq, after tune i was only at 309hp and 333tq, who the hell knows....
03-11-2008 | 09:37 PM
#88
he said it was around 12.4 and yea I'm comming to the conclusion my stalls huge it was in the car when I got it so I'm going with new injectors and finishing my tune the stall can wait for now until I have time to pull it and have it restalled to a 3500
03-11-2008 | 10:03 PM
#90
Doing it in that order is going to require another tune after the converter.
03-12-2008 | 01:01 AM
#93
03-12-2008 | 01:48 AM
#94
TECH Enthusiast
Joined: Sep 2004
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03-12-2008 | 03:00 AM
#95
03-12-2008 | 07:58 AM
#96
03-12-2008 | 09:02 AM
#97
Your stall is eating a lot of power because there's something wrong with it. It should not jump to 5500 and hold if it's a 3500 stall. And just because the injectors are high on the IDC, it doesn't mean they're maxxed and you need bigger injectors. If you are seeing a pressure drop at the rail under WOT, you're not getting enough fuel to maintain a good A/F ratio and your O2's are asking the computer for more fuel. So the computer tells the injectors to stay open longer. It can also be a pressure problem (injectors won't flow as much fuel at a lower pressure). In which case your fuel pump and / or wiring harness can be the problem.
Put a fuel pressure gauge on your rail to see where you are and go from there.
FWIW my car will start spinning tires in the mid 2000's RPM wise, converters don't quite work like some of you think
03-12-2008 | 08:35 PM
#99
Well those some cars you speak of well lets just put it this way i know you have heard of factory freak?? RIGHT!..... OK GOOD.... well you sir have a factory reject you see once a car is a freak or a reject it allways be just that it contiunes on throught the cars live even thru the process of moding and dont get me wrong some cars can go bad because the owner did something completly wrong ands not telling us or you have an assining tuner its easier to call a car a factory freak but not so easy to call one a reject but cars that dyno as low as yours did and his its def not normal or OK sooooooooo just to clairfy!!! cars that dyno low even with mods DEF have something wrong with them lol your statement is completly false my friend.
ALL my information is based on asumtions and not actual facts!
LOL
