It reads negative all the time because apparently you cant read the boost levels from OBD connection and thus why I got the "boost sensor kit" that connects to the gauge
Is there anything else out in the wild about the VMP kit? It seems like pretty sparse information to me. Tough call between the Whipple and the VMP option. Is the VMP a derivative of Magnacharger?
it looks pretty good to me. for sure it's early for the gt350 crowd and the odin but there's a guy on the FB boosted group that has it on his 350 and with the base kit (56inj and dual baps) with long tubes hit 806 rwhp on 93 lund tune. that's pretty mean. VMP has some good vids on it at their YT channel too.
Update .Finally got a good pull after working out some gremlins on my car and tune revision
It started misfiring on the dyno after first pull with old tune -made about 830.
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We first tried some colder brisk plugs but still did the same.
Misfire was on drivers side so swapped the coils which fixed the misfire but was then down on power. Plugs may have been too cold so went back to NGK and it did better like it did before first misfire .
I was may be expecting more but that's similar to what my 18 GT/Gen 5 whipple - made on the same dyno/pulley(3.0) so the dyno may just read low.
I am happy with it but may drop down to a 2.85 pulley ...currently on the 18GT which will be getting a 10 rib when I swap in its new motor. Its stock motor is still good and makes 900 whp with that pulley so I would expect the same with the GT350.
Engine is RPG sleeved Gen 1 block/Diamond 12:1 CR pistons /Manley rods. Heads are stock with valves spring upgrade/head studs. Stock headers with cat delete. Fuel is E85/lethal return with triple pumps. Spec SS twin disc clutch with QAI drive shaft. Rear end is stock but thinking of going to a 3.31 for drag racing
Lund did mention he does not think diamond makes a true 12:1 CR pistons and thinks its making torque like it 10:1 CR.
Motor is consuming some oil and may be losing some coolant so I may swap the motor at some point(will have RPG go through it ) for a spare I had built- a stock engine I had upgraded with Manley rods/ valve springs and upgraded phasers . Stock pistons so should be a true 12:1 CR.
it will be interesting to see if that motor will make more power .
New motor is broken in after about 700 miles so decided to get a pull . On the street it definitely feels better than the one it replaced . It made more power on the dyno on a more humid day but pretty sure the belt is slipping on the 3 inch pulley and it broke on the second pull .Update .
So .. less than a year later , RPG built motor got pulled as it was was eating a lot of oil and coolant . Will @RPG had thought it was the Diamond pistons used In the build as they have issues that were NOT known at the time.
So one my “spare “ motors came in handy.
This was an Alfonzo Novelllo build . Basic build starting with a never previously run voodoo (scored for cheap ) upgraded with Manley rods , replaced crank as old one was rusty sitting in y storage for a year) , GT500 head gaskets , PAC valve spring upgrades and Head studs . Of course billet OPG / CS .
Added oil and coolant cross over lines .
Old motor is with RPG and has been torn down .
As he suspected the issue was the Diamond pistons wearing badly and a small head gasket leak .
He is refreshing the engine with new RPG spec Manley pistons , upgrading the Manley specific H rods to the Manley lightened I beams, GT 500 head gaskets and R phasers.
sucks to be hear about the pistons. Any idea what they’re being replaced with?Update .
So .. less than a year later , RPG built motor got pulled as it was was eating a lot of oil and coolant . Will had thought it was the Diamond pistons used In the build as they have issues that were NOT known at the time of the build.
So, my “spare “ motors came in handy.
This was an Alfonzo Novelllo build . Basic build starting with a never previously run voodoo (scored for cheap ) upgraded with Manley rods , replaced crank as old one was rusty (sitting in my storage for a year) , GT500 head gaskets , PAC valve spring upgrades and Head studs . Of course billet OPG / CS .
Added oil and coolant cross over lines .
Old motor is with RPG and has been torn down .
As he suspected the issue was the Diamond pistons wearing badly and a small head gasket leak .
He is refreshing the engine with new RPG spec Manley pistons , upgrading the Manley specific H rods to the Manley lightened I beams, GT 500 head gaskets and R phasers.
RPG / Voodoo spec Manley’s. They won’t need the rod with the tapered end .
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