I am posting to let all would be ATI Procharger purchasers know a few things about the ATI System as I have experienced it. I purchased the P600B and it was touted as an all inclusive system for my 90 L98 Vert. So far nothing has fit up as advertised and to get things installed I have had to modify every piece.

The first problem was the supercharger oil line installation items were the wrong size, I needed 1/8" pipe, the kit provided 1/4" pipe. When I called ATI I was told the parts had to be right as those were the only parts they had in stock. I went ahead and bought parts that would fit outside of ATI and proceeded. Next I tried to install the Fuel Management System (FMS) and the installation location shown in the manual was nothing like what I found on my car. I called ATI and after some lenghty conversation they agreed the picture and the instructions in their manual were incorrect. They did send me another bracket for the FMU but it would not work without me cutting and welding it and finding an alternate location for the FMU that would allow my hood to close.

Today I tried to connect the fuel lines running from the FMU to the factory lines and found that they are too short even though the ATI Tech had earlier told me that there was plenty of hose included even though I had to move it to a new location. My next option is to purchase 3/8"od fuel line and cut and fit it to make the connection.

As you can tell I am thoroughly frustrated with this kit. Tomorrow I plan on contacting ATI and letting them know what I think of their product. After all I have been through, I am worried about what the rest of the kit must be like to install.

Please don't purchase this kit without getting someone else's experience. I can only say that I would not do it again.

Take care.

90Indy

 

Ask for Cary Prangru he is their main sales manager, for a tech guy ask for Dorian, he is the only one I trust there.

 

Sorry to hear that man, From what i read on boards, i would say the majority of people are not happy with ATI's claims, including myself. I would never recommend them to my worst enemy....They are an absurd CO. which makes COMPLETELY false claims on their products in regards to horsepower gains and quietness...and from i have seen..install time....I haven't heard one shop that installs and even distributes Prochargers say that ATI will make what they claim on STOCK LT1 Corvettes...Most shops say that its to dangerous to run 8spi even with the intercooler because of piston damage that can happen........Well thats not what ATI claims....I still have yet to see a Procharged STOCK Lt1 Vette with 385Hp to the wheels ....plenty of people with heads, cam, headers and procharger or strokers and bigger cube engines are making over 400 to the wheels and thats all well and good....but that does back up claims by ATI...talk to Herb as well who is not happy...or anyone with a procharger on a stock vette....My point is....Don;t advertise what you can't deliver....if i was told that in order to safely make 400rwhp would to to build the engine for the blower then i would not have even purchased this noisey POS....But i was duped just like many people

 

I can understand your anger. I have read a lot of your posts about your procharger experience.

I agree that the procharger ads say that this is a bolt on system, but that is not true.

I have finally got most of my issues sorted out and have plans to get the rest of them sorted out. I am really close now to getting things up and running correctly.

I have found out that supercharging is a very complex system (especially on a NA car). This is good that you guys are posting your results to let everybody know.

So far I am happy with my procharger system (for the most part), but it took me a year (after the system was installed) to get there. 389 RWHP (corrected) was my dyno reading after the install. The seat-of-the-pants feeling is that it is much faster than before as well.

The big thing to note is that, when you do put on a supercharger, the work is just beginning. It is not a bolt up and forget about system. I had the system installed by a shop (didn't run right after they installed it) and since then, I have had it off and on (modifying it as I went along) 3 times. People who are interested in supercharging need to know this.

I know that multiple people have said this. There are lots of issues with the procharger system (trust me I know). I think the biggest one is that people don't know what they are getting into (and the companies don't tell them either). I have learned a lot just from the corvette forum and my experiences with the supercharger.

I have come to the conclusion that the only way to do something right and know that it is done correctly is to do it yourself. Plus when something goes wrong, you will have better insight into how to fix it.

I highly reccomend a datalogger of some sort. It helped me out a lot.

Good luck guys. The learning curve is steep and a pain in the butt, but so far it has been worth it.

 

Scott just curious...is that 389rwhp without other mods such as heads/headers/cam etc...??? Auto or 6spd?

 

Wow this sounds familiar. I guess the only reason I have not ripped the thing out is that I don't want to have to start looking for a PS bracket that they made me chop in half!

I have had offers from folks to buy the system, but I am just too lazy to go thru all the work. I wish I had spent the $$$$$$ on heads/cam.

I think the main problem is belt slip and I don't really feel like dumping another grand for a custom pulley setup.

At least I was able to talk my buddy out of making the same mistake.

 

See thats the funny thing....I don't believe i am seeing a belt slip problem as i am seeing a constant 8psi flooring it off the line someimes as high as 10psi(which i know is not a good thing)

And i coulnd't agree more with the head/cam/header work i wish i had gotten done instead of this $7600 nightmare... i could have done gears as well...

 

Don't want to make you feel bad but remember when you first came on the board and asked for people's opinion between the SC and stroker. I and many other people suggested a stroker first then the SC later but you got the SC instead. I know it sounds cool to say that you have a SC vette but in reality most half decent built heads and cam LT1 cars will smoke a stock LT1 with SC.

I know vortech makes better power and have better reputation then ATI. ATI really tries to sell you on their "intercooled technology" crap, when all those little intercoolers do is restrict airflow.

Sorry to hear about your bad experience.

 

I actually sent you my dyno plot at one time because you requested it.

That 389 is stock top and bottom end on a 6 speed manual. I am still trying to get the tuning just right. I haven't had a belt slip problem either. I have added colder plugs and an MSD 6al unit (spark was blowing out).

Remember dyno number can vary on a day to day basis. During some tuning I had I believe 360 RWHP to start with and then I got it up to 389 before stopping for the day.

I am going to get a wideband here soon to tune with tunercat. I already am using datamaster for logging.

 

O yeah i still have those charts in my email i forgot all about them.....

 

Yeah, I can understand with how frustrated you are why that was last on your mind.

When the system first was installed, I had an idle problem right off the bat. I spent 2 months troubleshooting that. When I thought I found the problem and fixed it, I had a dead spot in the throttle (so bad the car would stall).

Then I fixed that (took about 3 months of troubleshooting). I had to use a datalogger to find that (I found some problems I didn't know I had with the datalogger, too).

Then I went to drive the car and the clutch master cylinder failed and leaked all out. I replaced that and sure enough the car ran great.

Then, (just last week while I was pre-paying for gas), I come outside to see that my tire is flat with a huge gash in the sidewall. This is a brand new tire. I suspect foul play, but regardless, now my car is sitting in the garage on a spare tire.

It seems like the car is cursed, but I know it is just bad luck with the tire and each problem has been a learning experience.

I still have some things to work out, but all in all, I love my car. (I can't wait to get the wideband on it and start tuning).

It is not my daily driver and if I blow my engine with the supercharger, I will just have to rebuild and build up the engine. More money into it but it will be better each time. Plus the satifaction of doing it yourself is great.

 

I am going build a Twin turbo LT1 in a few yrs. Yeah baby T68 twin turbo. I am going to junk my air conditioning and radiator shroud. That way it will allow me to place the 2nd turbo on the driver side and big front mount IC.


Bruce
544rwhp Untune SC power
Prefer turbo system.

 

Zelement...It wasn't that i CHOOSE a SCer over a stroker...And especially didn't choose a SCer because it sounds cool to have a SC'd car..if you read my posts i really wanted a stroker way more then a SCer...but in CT shops are scarce and not reputable enough to do that kind of work and i had to either do the work then or never because money was an issue and i had it at that time.....Mike at J & M talked me into the SCer...telling me how easy it was and it will make the same if not more power.and it was a simple bolt on...he said that he could do the stroker as well but would only be able to do it over the course of the winter....But hopefully people who come and go will read these posts and decide to never get an ATI Procharger...and Also...research your options and shops before making any decisions......