SLP Performance Thermostat and Pulley, worth it?

[hennesseyss10]

I was browsing around and find a lot of people have the SLP Performance Thermostat. Is it a nice little "mod" to have?
http://www.vividracing.com/catalog/2...0-p-75788.html

And also was looking at a pulley, thinking of buying one. Does anyone have this?
http://www.vividracing.com/catalog/2...0-p-75789.html

Any help would be great!

[Godsplumber]

[axis]

Those are two mods that are questionable. I say questionable because some have swarn by them for a long time while others have shown no real benefit. It all comes down to who you trust/believe. I don't think you'd do any harm by the either of them but I don't necessarily think you'll gain much, if anything. The UDP is expensive and time consuming to install, unless you have the proper tools and can do it yourself. It also lowers your idle so that can cause a problem if you're not tuned. Most seem to wait till they put a cam in before installing it since it's easily accessible during the cam install and the idle can be raised with the tune.

[Kelly@PCMofNC]

Yes, I would recommend doing the thermostat and underdrive pulley. Is it something you're going to install and pick up 50 horsepower with? No. However, it lays the groundwork for future mods. Once you start adding bigger bolt ons and especially a cam, the entire package comes into play. The cars that perform the best and put up the best dyno numbers are the ones that have all of the supporting mods here and there to go along with the "big" mods.

[GaBoy25]

Im very Interested also.

I didnt know the UDP was so hard to install though. Discouraging.

[Kelly@PCMofNC]

Originally Posted by GaBoy25

Im very Interested also.

I didnt know the UDP was so hard to install though. Discouraging.

It's not that bad in my opinion; having the right tools makes it a lot easier though than just trying to do this with your standard socket set.

[GaBoy25]

Originally Posted by Kelly@PCMofNC

It's not that bad in my opinion; having the right tools makes it a lot easier though than just trying to do this with your standard socket set.

Thank you so much

[2012REDSS]

As said before the right tools are the key. Get an install tool and ARP bolt and it can be done in an hour.

[RyanBoles]

I had a UDP on my 93 Z/28 and I noticed more torque but the only thing that bothered me was the low idle and all my lights would dim. I also had the thermostat i could hear the fans kick on sooner than normal. I know its two completely different motors but that was my experience.

Can anyone give any info on the Jet MAF upgrade? Is it that much of an improvement over the factory unit?

[BlaqWhole]

Originally Posted by hennesseyss10

I was browsing around and find a lot of people have the SLP Performance Thermostat. Is it a nice little "mod" to have?
http://www.vividracing.com/catalog/2...0-p-75788.html

And also was looking at a pulley, thinking of buying one. Does anyone have this?
http://www.vividracing.com/catalog/2...0-p-75789.html

Any help would be great!

I have the SLP pulley...see my sig. The good thing about the pulley is that the gains are throughout the entire RPM range. Dynos showed about a 5-8 RWHP increase throughout all RPMS. I looked it up back when I bought mine used about a month and a half ago. If I can find those graphs then I will post it. Now when I bought it I was very skeptical. I asked the previous owner what his thoughts were. He mentioned that it was hard for him to feel a difference on his car. But my butt dyno was very pleased with the results. The shop told me that if I wasn't pleased then they would re-install the old one for free...yes I've been going to them with all my cars for the past 6 years. So needless to say, the pulley is still on my car and I love it.

Now some other members have had troubles and removed the pulley. But I've had no issues with the charging or cooling or heating system...or any other system at all. My engine idles perfectly fine and smooth as hell. And the acceleration was improved over the OEM pulley. You can look at both pulleys side by side and see a huge difference in diameter. If you ask me, it's a good upgrade if you can find one used for a lower price. I don't know if it would have been worth the $250 plus that I've seen them going for brand new. I believe there is someone on here selling one so you might be in luck.

And BTW, a little install advice. Do not re-use the pulley bolt. You have to get a new one. The dealer has them for about 10 bucks. And there is no need to cut the AC belt. It can be easily removed without cutting. And make sure the proper torque sequence is followed. Even if you have to stand over someone's shoulder and watch them. My guys were good and I had no qualms with the way they installed it but I have heard some horror stories.

[Parag]

they are worth doing if you are there already. like for cam or something, but i dont reccomend tearing into the motor to place either of those. but hey if you can do it yourself and have a boring saturday to fill go for it.

[Nitroman28]

Originally Posted by Parag

they are worth doing if you are there already. like for cam or something, but i dont reccomend tearing into the motor to place either of those. but hey if you can do it yourself and have a boring saturday to fill go for it.

You do know it takes under an 1hr to install with the right tools? No tearing in to it, remove the intake tube, Belts, Pulley,

[BlaqWhole]

Originally Posted by Parag

they are worth doing if you are there already. like for cam or something, but i dont reccomend tearing into the motor to place either of those. but hey if you can do it yourself and have a boring saturday to fill go for it.

To each his own but it's not really that big of an install. 1-3 hours at the most. Besides, you probably won't even notice the difference if you went ahead and did a major upgrade like a cam. I'm one of those types that I have to feel how my car responds to every single mod. That's just me tho...

[mikeSS]

waste of time if you ask me. i only do mods that add decent power or sound.