Chasing the Procharger flatline

[whatsup62]

Well I finally made it back to the Dyno today. As some of you know I have had some transmission issues. Now with the TR6060 in place we can get back to business. Last year I was able to make it on the dyno once. I was happy with the results at the time but the dyno curve flatlined at 6600 rpm. We ran it to 6800, 7000, 7200 and all three pulls had the flat line starting at 6600. On that day on a 93 tune the car did 601/492. Was exactly one year ago. Through this Winter there were a lot of post with discussions on the flatline..some had it some did not. I was determined to chase that bitch down.
Mods over the Winter and Fall.... Edelbrock Victor ll, MAK inlet/tube, and switch to E85. First pull today was to 6800, second and final pull was to 7150 even though the graph shows different. Motor good to 7500 so there was more left in it but I'm very happy with the results.
This is a HO P1SC-1(6 rib) setup on a 3.6" pulley with the stage 2 intercooler. Oh....and it just climbs and keeps climbing ... no more flat line.. :clap2:

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[Charlie1987]

Hmm, so pretty much the E85 fixed the issue?

 

[christian]

Excellent numbers! Prolly the Victor that mostly fixed the flatline huh?

 

[whatsup62]

Excellent numbers! Prolly the Victor that mostly fixed the flatline huh?

Thats my belief...I think it all has to do with the IMRCs...whether its tune, mechanical limiting, or complete elimination of them I dont know.

 

[SolarFlare]

Great numbers for the P1. In the first graph, is it normal that the powerband jumps like that at 3500? Also on the second pull it made more than the first but at less than 6500, what's the actual latest peak numbers? I'll likely stick with gt350 manifold but great setup.

Edit: maybe "corrected" numbers is what I missed.

 

[Crackerjack17]

is it normal that the powerband jumps like that at 3500? .

I woud guess that's near where they went WOT and the blow off valve closed? Or maybe not. Lol

 

[whatsup62]

I woud guess that's near where they went WOT and the blow off valve closed? Or maybe not. Lol

This ^^

 

[EgoBoost]

You needed some good news after those tranny issues. Great set up!

 

[MyLilPony]

Nice!!! Getting a manifold this week, that top end taper is in trouble

 

[jhatley7]

Same tuner both times right?

 

[jabrax]

I received a schematic from Lund, I haven't bothered to do it yet- they say it is the IMRC line closing on centr boosted applications.

They say, "The Vent line running from the IMRC to the air filter tube that is pre-blower should be left open atmosphere and you should cap the induction tube nipple.

 

[whatsup62]

Same tuner both times right?

Yes..Jon ll

 

[jhatley7]

Yes..Jon ll

Thought so. Awesome numbers!

 

[Phoenix]

just swap to the P1X. mak shows it doesnt flatline.

 

[Phoenix]

I received a schematic from Lund, I haven't bothered to do it yet- they say it is the IMRC line closing on centr boosted applications.

They say, "The Vent line running from the IMRC to the air filter tube that is pre-blower should be left open atmosphere and you should cap the induction tube nipple.

happens on higher HP turbo cars as well.

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