WTF happened
#1
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WTF happened
Before I installed my LTs and ory with the ls6 intake and tune I had 300rwhp. I put all this **** on and gained 8rwhp and lost two of tq. WTF happened?
#6
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I would make a catback your next mod as the stock muffler and I pipe are now restricting your exhaust flow. You shouldn't have lost torque at all. peak tq will move a little higher in the rpm range but there is no way it should have lost any. Was it dynoed at masport both times? and was it dyno tuned or are you still on stock tune?
#7
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Dynoed and tuned at masport...the first time I dynoed the car for a baseline it was a local shop in Miami. Only mods were the free mods and the car made 300rwhp and 320rwtq. I didnt think that I pipe and muffler would restrict it that much. Also my ory is vibrating on the undercarriage. But the tuner say that wouldn't affect the knock sensor
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#8
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Dynoed and tuned at masport...the first time I dynoed the car for a baseline it was a local shop in Miami. Only mods were the free mods and the car made 300rwhp and 320rwtq. I didnt think that I pipe and muffler would restrict it that much. Also my ory is vibrating on the undercarriage. But the tuner say that wouldn't affect the knock sensor
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That is probably where you "lost" the tq then. Different dynos will ready differently. dyno jet will show more hp and tq than a mustang dyno. and even if 2 different dynos are the same model they will not read 100% the same. thats why you cant put too much though or effort into dyno numbers. If you can spare the money for a dyno pull or 2 go back to the local shop it was dynoed at for the baseline and run it again and see what it shows.
You can't do a direct comparison of before and after mods on two different dynos. If you go back to the original dyno, you might find that you gained more like ~20rwhp.
I also agree that the stock muffler is holding you back though. You will never see the most out of your headers and intake with a stock muffler. At the very least, get a cutout.
#10
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Exactly.
You can't do a direct comparison of before and after mods on two different dynos. If you go back to the original dyno, you might find that you gained more like ~20rwhp.
I also agree that the stock muffler is holding you back though. You will never see the most out of your headers and intake with a stock muffler. At the very least, get a cutout.
You can't do a direct comparison of before and after mods on two different dynos. If you go back to the original dyno, you might find that you gained more like ~20rwhp.
I also agree that the stock muffler is holding you back though. You will never see the most out of your headers and intake with a stock muffler. At the very least, get a cutout.
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All dynos are different and a catback or cutouts will improve a little. What matters...did your cars performance feel like it improved? Sometimes its not all about the numbers you put down especially with basic bolt ons.
#14
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OP, don't worry too much since you did it on 2 different dynos. If you are too concerned with it, then go back to a local dynojet.
How is 300rwhp weak to begin with? That's right on par with what a stock LS1 should put down. As he said: "Only mods were the free mods and the car made 300rwhp and 320rwtq." Those numbers are fine.
^That is what you should be worried about. I felt a definite gain from doing my headers on the buttdyno.
How is 300rwhp weak to begin with? That's right on par with what a stock LS1 should put down. As he said: "Only mods were the free mods and the car made 300rwhp and 320rwtq." Those numbers are fine.
^That is what you should be worried about. I felt a definite gain from doing my headers on the buttdyno.
#15
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OP, don't worry too much since you did it on 2 different dynos. If you are too concerned with it, then go back to a local dynojet.
How is 300rwhp weak to begin with? That's right on par with what a stock LS1 should put down. As he said: "Only mods were the free mods and the car made 300rwhp and 320rwtq." Those numbers are fine.
^That is what you should be worried about. I felt a definite gain from doing my headers on the buttdyno.
How is 300rwhp weak to begin with? That's right on par with what a stock LS1 should put down. As he said: "Only mods were the free mods and the car made 300rwhp and 320rwtq." Those numbers are fine.
^That is what you should be worried about. I felt a definite gain from doing my headers on the buttdyno.
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300rwhp is a very good number for a stock A4 LS1. There are many A4s that only dyno 28x-29x rwhp in stock form.
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#19
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Using my prev example IF my Dyno'ed 305 RWHP stock which is not out of the realm of possibilities, and the 324 RWHP was the new figure, with dividing the new # over the old I get 6.2% increase and to be honest, I really did not "feel" it. The mods that I felt was gears (converter for A4 cars) due to the TQ multiplication and my cam swap.
Also to mention Header/Cat back + tune which was done after the lid felt a good gain too. I made 355 RWHP with that and that came to about 9.7%.
#20
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Another good reference. In order to actually "feel" a different the RWHP increase needs to be at least 8% or better improvement over the original #. Anything off the throttle is throttle response and should not count in that "opinion".
Using my prev example IF my Dyno'ed 305 RWHP stock which is not out of the realm of possibilities, and the 324 RWHP was the new figure, with dividing the new # over the old I get 6.2% increase and to be honest, I really did not "feel" it. The mods that I felt was gears (converter for A4 cars) due to the TQ multiplication and my cam swap.
Also to mention Header/Cat back + tune which was done after the lid felt a good gain too. I made 355 RWHP with that and that came to about 9.7%.
Using my prev example IF my Dyno'ed 305 RWHP stock which is not out of the realm of possibilities, and the 324 RWHP was the new figure, with dividing the new # over the old I get 6.2% increase and to be honest, I really did not "feel" it. The mods that I felt was gears (converter for A4 cars) due to the TQ multiplication and my cam swap.
Also to mention Header/Cat back + tune which was done after the lid felt a good gain too. I made 355 RWHP with that and that came to about 9.7%.