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I got LT headers and an ls6 intake put on my car last saturday and had it dyno tuned. the car put down 307 Rwhp and 311 Rwtq. While i do believe these numbers are rather low, i am more concerned with something being wrong with the car. It is a 2000 a4 an has about 30k miles. Do you guys think this is something i need to look into?
Where did you have it tuned/dynoed? Did they provide any insight? Hopefully a local professional tuner will see your thread and reply back, yep I'd take it somewhere reputable and let them take a look. There is a tuner in mid-Florida, can't remember which city, and another in Jacksonville. I was just in Panama City. Sorry, I don't have any names for you.
Do a search on this forum for tuners (assuming your answer to my 2nd question was no), and take the car there. Yes your numbers sound low.
i had it tuned in tampa by revxtreme who is a supporting forum tuner. They were a pleasure to work with. the tuner said that these numbers were lower than he expected, but i do not believe he thought something was wrong. he made 6 dyno runs and told me that those were te best it was going to get. however, he said that he originally expected closer to 340 rwhp and perhaps 325 since my car is an a4. The car did not feel that much different from the time i brought it in to when i got it back. hopefully they can offer some insight. i shot them an email asking the same question.
Not bad. My '99 A4 bone stock put down 278 RWHP so I would imagine that you were in that area. Did you do a before dyno? I don't believe that there is any noticeable gain with the LS6 intake on a stock engine. Also you would probably get more bang for your buck out of an airbox than LT's, again on a stock configuration.
What are you using for an air filter intake and are you running stock cats and H-pipe? I've got an 2000 A4 and dynoed 302 rwhp with just a Haltech Stinger intake and Borla Stinger cat back exhaust.
What are you using for an air filter intake and are you running stock cats and H-pipe? I've got an 2000 A4 and dynoed 302 rwhp with just a Haltech Stinger intake and Borla Stinger cat back exhaust.
I have a halltech stinger intake and have the supermaxx header system (high flow cats, x pipe LTs, etc...) and borla stingfers. i also had MSD wires put on but do not believe that would affect the power.
Not bad. My '99 A4 bone stock put down 278 RWHP so I would imagine that you were in that area. Did you do a before dyno? I don't believe that there is any noticeable gain with the LS6 intake on a stock engine. Also you would probably get more bang for your buck out of an airbox than LT's, again on a stock configuration.
Unfortunatly, i dod not have a baseline dyno so i am going more off of feel than anything. like i said i am not concerned with the numbers, but do care if there is a problem with the car. While i was there they did an excellent job on the car so i do not know if there was a problem, from where it originated.
Something is wrong. I would have expected the LS6 to give you maybe 10-12 rwhp and the headers 18-25. I think 320 rwhp is more in line with where you ought to be.
Did the dyno guys give you a print out that maybe has the air/fuel ratio at rpm on it? If it's a whole lot above or below about 13.0 - 13.3 at higher rpm, need to adjust the fuel table. High 13's or low 14's at low speed may not be hurting that must but running too lean or too fat at higher engine speed will hurt.
Something is wrong. I would have expected the LS6 to give you maybe 10-12 rwhp and the headers 18-25. I think 320 rwhp is more in line with where you ought to be.
Did the dyno guys give you a print out that maybe has the air/fuel ratio at rpm on it? If it's a whole lot above or below about 13.0 - 13.3 at higher rpm, need to adjust the fuel table. High 13's or low 14's at low speed may not be hurting that must but running too lean or too fat at higher engine speed will hurt.
Charlie
its strady at around 13.1 from 4000 to 6500 RPM.
i have a printout of the dyno sheet if it would be helpful...
i have a printout of the dyno sheet if it would be helpful...
Thanks
I know this is going to sound so fundamental that to ask the tuner about the following may annoy them, but it may not hurt to double check some things like total advance and initial advance. I think you're missing 18 - 20 horsepower. Is there a chance there is an intermittent ignition problem, like maybe a plug wire that is dropping out once in awhile or something? Obviously whatever it is isn't continuous if it is something like a coil, plug wire, spark plug, etc., but something is amiss. I tend to focus on two things - fuel and spark. Fuel seems okay so it may be worth exploring the other.
I had maybe 10 more RWHP than you with a catback, blackwing, LS6 intake manifold, offroad x pipe, and a tune in my 98. So it could just be the dyno. But I'd bring it somewhere else reputable to get retuned if you're looking to get all you can out of the car.
Big difference in power between the earlier and later model LS1's. Remember I was having difficulty reaching 280 RWHP on my '99.
top end cleaner, new plugs. all it took for me. my intake runners were all gummed up when i did the intake swap so i cleaned them out with a rag and ran some seafoam thru the pcv. low and behold i found some of the power i was looking for.
This is getting into the grasping at straws realm, but does the C5 A4 converter lock up at some speed for efficiency like older GM autos did? If so, check to see if the converter is locking up. If it is not, not doing so could cost about 3-4%, or 10-12 hp. The top end cleaner is a good idea too.