with UDP it will slow the belt down at all RPM's
if you compare RPM x before and RPM x after the AC ALT WP will be turning slower
if you use the 20% mentioned earlier
so if you compare1000 RPM before then after
the accessories would be turning like it was 800
if you compare 2000 the after its like your at 1600
and so forth

 

OK, 331StrokerFox, you have my attention.I drove it really fast tonight. What do you suggest I do to make it go faster?

 

13.1 1/4 mile @ 107 mph. 93 Octane Brenspeed Tune with a C&L CAI. Steeda UDP's.
13.2 1/4 mile @ 106 mph. 93 Octane Brenspeed Tune with a C&L CAI. O/R H-pipe.

Comparing the time slips, and these times were months apart but almost identical in 60'. The UDP's really are a good buy. The UDP's really help the engine rev faster, and you can say that it is all in my head but removing the cats offers a 10ish HP Gain... yet I performed better at the track with the UDP's then I did with the O/R H pipe, hence the comparison.

These are all opinions of various people, and all we have to go by are our own experiences. Hence the beauty of forums. I'd suggest getting a real canned tune with an SCT XCal II Tuner. I'm not exactly sure what Superchips even is, but I imagine it's not as customizeable and giving you the performance as a canned tune would from one of our popular vendors. 300 RWHP isn't that hard to achieve, and basic mods such as Intake & Tune, along with UDP's or something small as an O/R pipe will get there.

Most people would recommend a gear swap, to give you the impression that your car is accelerating faster; which it should. Another is a one piece driveshaft, which will take off about 20 lbs of unwanted weight, strengthen your drive train, and reduce your rotating weight; and in doing so free up some of the power lost through the drive train. Same could be said about the pulleys, lighter flywheel/clutch combo, etc.

I've heard various things about Charge Motion Delete Plates, but have had no experience with them. They require a custom tune but isn't that hard to obtain, and they basically delete the butterflies located beneath your intake manifold runners. $90 could gain you a few HP but I'm not sure how much you'll notice them.

 

Have you seen one of the latest issues of Fast Fords Mag? It has a DVD and it showsaround10 hp (iforgot the exactnumber)or so gain using pullies. I never would have believed pullies would make that much difference.

I had gears, water pump and pullies thrown on my car in one install, so I cant give a description regarding performance wise for just the pullies.

 

+1 300 in a manual is pretty easy.

On the CMDPs. There are quite a few dyno charts around the net that show 7-13hp gain and no loss down low. HOWEVER, I did alot of research about these and I have never seena graph that didnt already have LTs installed. So I waited to get CMDPs till after I had LTs. So I can not comment on them without LTs.

 

SCT is short for superchips tuner, when he was reffering to superchips he was talking about the sct xcal tuner.

 

Magazines are a testing ground for products, why dont you give the tech guys at 5.0 and ask them about there exhaust install on a 2002 Mustang GT. They claimed to have gained 10 horsepower out of the deal, but infact lost torque and only gained about 5-7.

As for the man who posted about the tenth of a seconddecrease in his time. Where the runs consecutive? Manuel or auto? outside temp? There are too many variables to conclude that the pullies knocked a tenth off. Manuel is unconsistant, cooler night would make your car run better. Listen, i work at a shop, i have installed pullies and many other products. Just because a magazine says it is good, does not mean it is worth the money.

 

It was always my understanding that Superchips and SCT were different companies. They both specialize in tuners for cars and trucks but they are different companies.

http://www.sctflash.com/

http://www.superchips.com/home.phtml

 

I was comparing the O/R H pipe with the Pulleys, not sure if you got that. The car is a manual, and one was done in April and the other in November. I don't know why you insist on arguing with us. Whether you like the product or not, that's up to you. I'm not into superchargers or nitrious, but I'm not going to bash everyone that has/uses the products because I know they have been proven to make power. You aren't getting 50 HP from pulleys, but for $200 a 5-10 HP increase isn't bad.

Looking at the sheets now, and the newest one only has the time/date but didn't include the temps and such like they normally do.

O/R Pipe: 60' 2.039, 1/8-mph 8.576/83.39, 1/4-mph 13.229/106.01
Pulleys: 60' 2.088, 1/8-mph 8.513/94.65, 1/4-mph 13.104/107.37

Temperature in April 5 was 43 degrees, 0 humidity, and 30.07 Absolute barometer. I'm pretty sure it was close to that Nov 3rd.

There is more involved with pulleys then just making power. It's enabling the engine to spin faster, as it doesn't have as much to turn. Hence the whole point of them. If the stock pulley can rotate 6000 RPMS in 1 minute (just throwing out numbers to make it simple.) and the aftermarket pulley can rotate 6000 RPMs in 40 seconds... I think you get the point, and I'm sure I don't need to explain this to you.

 

Well I didn't have it dyno'ed before the UDP's but the pullieswith a CAI, tune and axlebackshave given me 307hp at the wheels and 330ft lbs. I have a manual. I will try to scan my dyno sheet in a couple of minutes.