Chip question...(not your normal chip question)...longish
#1
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Why is it that the NeuSpeed chip is a .8 bar that offers 195 HP, and the Wet chip is a 1.0 bar that offers 200 HP, and the TAP chip is also a .8 bar that offers 190 HP (+8 with the filter total 198)?<br>It seems to me that if you're getting 14+ lbs of boost from a 1.0 bar chip, you would get more than 5-10 HP over an 11 lb of boost (.8 bar) chip.<br>If that is the case, the NeuSpeed P-chip looks like a no brainer. You get 195 HP (or they say), run 11-12 lbs of boost so it's not such a strain on your car as a 1.0 bar chip, and it's only $169 from GreedSpeed. It also is convenient that I live in the same city as GreedSpeed and only 5 miles from NeuSpeed.
#2
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It is tough to compare hp ratings from the different tuners. They each use their own dyno and dyno brands make a big difference in the numbers that are generated.<p>This is why a head-to-head comparison would be a great thing.<p>Rich<br>1.8TAQMS APR<br>
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Horsepower, IMO is not a key thing for a street car. What is key is torque, what rpm is max torque and what is the shape of the torque curve. Some of these guys sacrifice torque to get <br>high Horsepower numbers for marketing. Also, as stated, I would take all these numbers with a grain of salt so to speak, as you don't know conditions, dynos etc etc
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Torque is what you are after, hp is irrelevant. Dynos and dyno runner are notorious for variation and inflating numbers.<p>Maybe you are new to the list? <p>Since hp is based on the rpm, that is where the REAL wear comes in. An engine that the torque tops out at 6500 rpm will last much longer than a 7500 rpm (torque peak) motor. Boost level is absolutely irrelevant to durability in THIS motor (unless you are pinging/knocking). <p>Daily mantra: NO BLOWN KKK 03 TURBOS (1 potentially) or MOTORS from chipping. Wastegate rods breaking not relevant since they happen in the non-chipped cars.
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also, air is only one part of the equation, you also have to increase timing and fuel. I have the Neuspeed .8Bar and have driven other chips, there is barely any noticable difference between them-- but a HUGE difference from stock. I would concern myself with convenience and price at StageI, unless you are going for Stage II and beyond where the tuner can make a real impact.
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As far as I know, dynos are ALL fairly accurate devices. Even different brands should provide readings within a certain window of accuracy. I think what is more important is to find out just "where" the power is being developed, by looking at the graphs. Saying a chip adds 50 hp doesn't say a whole lot. If it is only making an additional 50 hp at a spot in the rpm range that is 300 rpm's past the factory set rev limiter, what good is that going to do in daily driving? Not a whole lot. I'll take a chip that makes a modest increase in power throughout the entire rpm range over a chip that makes more peak hp at the very upper limit of the rpm range any day!<p>I do agree that a head-to-head comparison would be a great thing. However, I assume you mean head to head with the same car on the same dyno. Even different cars of the same model on the same dyno will produce different numbers.<p>Mike
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I asked this question of one of the tuners and he told me about two very different types of dynos. I forget the details, but the result is that the torque and hp numbers from each type cannot really be compared.<p>Yes, this is hearsay (heresy) but he convinced me that his lower published numbers meant little to the performance of the chip.<p>Rich<br>
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Dynos can only figure out the HP at the wheels, not at the flyweel. Tuners quote the HP at the flywheel, though. There is a factor between them. I have heard you lose around 15% with FWD and 20% with AWD. How do they really determine this? I would assume they determine it by running a stock car at the HP peak on a dyno, however this may be a factor that can be fudged. I wish everybody just worked in terms or toque at the wheels, not HP at the flywheel.
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