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Supercharged 1999 GTS ACR - I finally got my Viper on the dyno so I could do the fina

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Old June 2nd, 2020, 03:06 PM   #21
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Quote:
Originally Posted by Skidmark View Post
Very nice! I have a 99 GTS with a Novi 2000 as well on stock internals, only making about 55% of the HP yours is.
What does yours make and what boost level and pulley setup?
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Old June 2nd, 2020, 07:32 PM   #22
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Quote:
Originally Posted by WDW MKR View Post
Beautiful car and setup. Makes me want that F1X even more, though I swore Id keep this car naturally aspirated. A black 99 ACR with that kind of power is a holy grail car.


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I put a F1C on mine, was a bit fun then the rings let go hoping for 800whp this year
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Old June 2nd, 2020, 07:45 PM   #23
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be very careful tightening that belt, those crank snouts break pretty easy. dont ask me how i know.

doug can be reached by phone 954-434-9356
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Old June 2nd, 2020, 08:53 PM   #24
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Originally Posted by b3rndtt0ast View Post
I put a F1C on mine, was a bit fun then the rings let go hoping for 800whp this year

Very nice! I had a custom F1A setup on my 03 Cobra and miss it. The bypass valve sounded like a street sweeper.


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Old June 3rd, 2020, 05:33 PM   #25
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Quote:
Originally Posted by Endlessgts View Post
What does yours make and what boost level and pulley setup?
I really don't know much about my boost/pulley setup since I don't have a boost gauge and I bought the car with the S/C and tuning already done. The car made 575whp on a dynojet with 91 octane, high flow cats, and a B&B exhaust.
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Old June 3rd, 2020, 09:37 PM   #26
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The polished engine bay is off the chain!!!

Last edited by 2Fasst; June 4th, 2020 at 08:19 PM.
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Old June 3rd, 2020, 09:40 PM   #27
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Old June 4th, 2020, 08:16 PM   #28
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Quote:
Originally Posted by TT_6SPD_95 View Post
I have been chasing belt slip issues for a while now and I just got done installing the new grip pulley, green HD belt and Doug Levins belt tensioner assist piece and all is good now even without touching the belt tensioner assist once after installed. I'm sure I'll need to tighten a little bit soon as the belt should stretch to a point...maybe it will make another pound? Not sure.

The "really rough" pulley's don't do as good btw. If anyone needs help with belt slip on their supercharged Viper I have many pointers now! 🙂

Anyway, I got the car on the dyno and did a pull and the car was actually making a lot better boost now which it has NEVER done yet, so onto the tuning!

Now that boost was consistent I tuned the car the rest of the way and it made 1,007rwhp/1,021rwtq at 14lbs of boost. It actually makes boost now to redline instead of dropping off. Compared to the last time on the dyno the car gained 220rwhp at 5,800rpm and around 100rwhp at around 5,200rpm as boost does much better now at upper rpms's...especially 5,500+rpm!

Now it's ready for the street. 🙂
Are these numbers E85 or 93?
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Old June 8th, 2020, 03:04 PM   #29
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Sorry, I have been away as I have been very busy with everything. It is a supercharger cam by JMB Performance. You'll have to ask them about the cam specs as I am not 100% on the particulars on their cam.

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Quote:
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Thanks! I just did the adjustable suspension on it a little while back. Here are some photos in light that isn't washing the photo out. Lol The suspension setup works really well and is a solid upgrade...kept the original Koni adjustables in the box though. 🙂

And ya, I was going to keep mine stock too as I had the Supra for power, but that "I'm keeping it stock" didn't last too long. Haha
Can you give us specific details on engine like cam specs head work
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Old June 8th, 2020, 03:05 PM   #30
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Yes, that's why I'm just going to leave it the way it is even though I could probably get another 1lb out of it... I'm calling it good though. 🙂

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be very careful tightening that belt, those crank snouts break pretty easy. dont ask me how i know.

doug can be reached by phone 954-434-9356
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Old June 8th, 2020, 03:08 PM   #31
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Thanks, we fully polish Viper engine bays all the time. They all look really nice if done correctly with the right combination.

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The polished engine bay is off the chain!!!
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Old June 8th, 2020, 03:08 PM   #32
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This is on E85

Quote:
Originally Posted by 2Fasst View Post
Quote:
Originally Posted by TT_6SPD_95 View Post
I have been chasing belt slip issues for a while now and I just got done installing the new grip pulley, green HD belt and Doug Levins belt tensioner assist piece and all is good now even without touching the belt tensioner assist once after installed. I'm sure I'll need to tighten a little bit soon as the belt should stretch to a point...maybe it will make another pound? Not sure.

The "really rough" pulley's don't do as good btw. If anyone needs help with belt slip on their supercharged Viper I have many pointers now! 🙂

Anyway, I got the car on the dyno and did a pull and the car was actually making a lot better boost now which it has NEVER done yet, so onto the tuning!

Now that boost was consistent I tuned the car the rest of the way and it made 1,007rwhp/1,021rwtq at 14lbs of boost. It actually makes boost now to redline instead of dropping off. Compared to the last time on the dyno the car gained 220rwhp at 5,800rpm and around 100rwhp at around 5,200rpm as boost does much better now at upper rpms's...especially 5,500+rpm!

Now it's ready for the street. 🙂
Are these numbers E85 or 93?
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Old June 8th, 2020, 09:17 PM   #33
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Originally Posted by TT_6SPD_95 View Post
This is on E85
What ECU are you on again?
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Old June 15th, 2020, 10:35 PM   #34
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Stock ECU...I tuned it with SCT.

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This is on E85
What ECU are you on again?
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Old June 16th, 2020, 06:18 AM   #35
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sounds very similar to my set-up how much timing do you have up top
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Old June 16th, 2020, 06:41 PM   #36
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Originally Posted by TT_6SPD_95 View Post
This is on E85
Those are some nice e85 numbers. My build is similar to yours with the exception of e85 and I have Striker heads/cam, w/m and 93. I was told that I should see upper 800s to 900rwhp depending on the tune. Can't wait until the build is complete. I may switch to e85 next year for the 1000 feel.

Last edited by 2Fasst; June 16th, 2020 at 07:19 PM.
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Old June 17th, 2020, 11:18 AM   #37
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you can make 1000 plus rwhp with 93 and water/meth..i have done 1031 rwhp & 985 rwtq
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