Harrop TVS86 Owners Thread

[Kodename47]

Originally Posted by Irace86.2.0

Is it 1.36 bar or 19 psi including atmosphere or 5 psi of boost on the gauge, or is that 1.36 bar above atmosphere and thus 19 psi of boost on the gauge?

That's MAP, so 0.36 bar of boost. However mine is a Sprintex and running the OEM sensor, so capped reading. Where the output is 1 is where it's going into positive pressure.

[Irace86.2.0]

Originally Posted by Kodename47

That's MAP, so 0.36 bar of boost. However mine is a Sprintex and running the OEM sensor, so called reading. Where the output is 1 is where it's going into positive pressure.

So it looks like at 40-50% of accelerator pedal is where boost starts.

[Kodename47]

Originally Posted by Irace86.2.0

So it looks like at 40-50% of accelerator pedal is where boost starts.

Is on mine, however I have what I guess most would deem as soft pedal mapping so I would expect a more standard map to be around 10% less.

[Irace86.2.0]

Originally Posted by Kodename47

Is on mine, however I have what I guess most would deem as soft pedal mapping so I would expect a more standard map to be around 10% less.

10% seems low, as if highway driving would have enough pedal to be in boost. Is that what people are getting?

[toast]

10% less than the 40-50% since he has a soft pedal mapping...

[Irace86.2.0]

Originally Posted by toast

10% less than the 40-50% since he has a soft pedal mapping...

Thanks, yea, so I’m still curious if people are seeing boost like are you guys getting 1-2psi at 70mph or is the bypass setup for max efficiency?

[sw20kosh]

Originally Posted by johan

Already been down that road. Add too much and the car won't move (literally the car died on me several times when pushing the gas pedal to leave my driveway because the motor couldn't compress the air to splode it) add too little and it's bog (because of soul crushing ignition retard from having 12psi of boost at 1800rpm) then POWER (when it recovers), spinning the tires from every stop light looking like an asshat.

It's reasonably dialed in now, but I still get some gremlins when trying to drive sedately. Sometimes I'm tired and I just want to leave a stop light like a normal human being.

It'd be so much easier if I just had something statically pulling boost out at low RPM. Then the car could be tuned normally. I had a setup like this on a previously supercharged car and it was really nice.

The slushbox isn't doing me any favors here.

Sounds like there is something majorly wrong with your hardware/tune. There is no way you can be in boost starting off from a start. And you shouldn't be having any driveability issues.

I am on the 70mm pulley and have stage 3 piper cams and have 0 driveability issues. Also there is no where near any kind of boost when putting around town. The bypass valve will be bleeding off any pressure at these low load conditions.

[Trefoil]

Originally Posted by johan

Already been down that road. Add too much and the car won't move (literally the car died on me several times when pushing the gas pedal to leave my driveway because the motor couldn't compress the air to splode it) add too little and it's bog (because of soul crushing ignition retard from having 12psi of boost at 1800rpm) then POWER (when it recovers), spinning the tires from every stop light looking like an asshat.

It's reasonably dialed in now, but I still get some gremlins when trying to drive sedately. Sometimes I'm tired and I just want to leave a stop light like a normal human being.

It'd be so much easier if I just had something statically pulling boost out at low RPM. Then the car could be tuned normally. I had a setup like this on a previously supercharged car and it was really nice.

The slushbox isn't doing me any favors here.

I've had the same issues. Still trying to contact the group that tuned the vehicle. It predominantly happens in warmer weather.

I've also had P0171, P0172, C1201, C1231, and C1241 codes over the course of this. Also, the intercooler pump relay's fuse blew not too long ago which was a giant surprise.

[sw20kosh]

Wanted to share my track build. Very happy with this kit so far. Thanks @HarropOz

Harrop Kit at 15-16 psi on a CSG spec Blue Moon assembled motor with stage 3 Piper cams on e80 flex fuel.

Generating massive heat from the power, so needed dual oil coolers to keep temps down (2x 25row setrabs). Built ducting for all heat exchangers. Temps are looking good now!

[xwd]

What compression ratio is that motor?

[Irace86.2.0]

@HarropOz New Years Resolution: CARB EO for 2018

[sw20kosh]

Originally Posted by xwd

What compression ratio is that motor?

12:1

[byun]

Looking forward to joining the owners club. The struggle of waiting is real...


Sent from my iPhone using Tapatalk

[CxG]

Originally Posted by sw20kosh

Wanted to share my track build. Very happy with this kit so far. Thanks @HarropOz

Harrop Kit at 15-16 psi on a CSG spec Blue Moon assembled motor with stage 3 Piper cams on e80 flex fuel.

Generating massive heat from the power, so needed dual oil coolers to keep temps down (2x 25row setrabs). Built ducting for all heat exchangers. Temps are looking good now!

so what happens when you run out of corn juice? with the compression ration you got is it still possible to safely run 93 octane?