Official Harrop TVS1740 Supercharger Thread

[Soden82]

Very much looking forward to the stage 2 kit

[ebisu8]

I hit 7.7lbs of boost yesterday, whoa.

[mubarak]

Yes stage 2 will be the way to go.
I have some a question
How is this kit will performs and hold in a hot climate
We have here in summer around 45c ,,also humidity is so bad iit is close to 80% with wind of 2 km/h.
I need this answer so I can decided to buy the kit or no.

Thank you.

[8500RPM]

Originally Posted by mubarak

Yes stage 2 will be the way to go.
I have some a question
How is this kit will performs and hold in a hot climate
We have here in summer around 45c ,,also humidity is so bad iit is close to 80% with wind of 2 km/h.
I need this answer so I can decided to buy the kit or no.

Thank you.

I think Stage 2 will be geared around using bigger injectors for E85. If that's the case engine temps will drop from normal stage 1(my opinion)

I haven't really read any overheating issues with Harrop.

[ashtaron14]

drwankel

I installed this kit in November 2014, with 32,400km, and my car is over 75,500km. Still going strong.

[mubarak]

Originally Posted by ashtaron14

drwankel

I installed this kit in November 2014, with 32,400km, and my car is over 75,500km. Still going strong.

P.m sent.
Please let me know.

Thank you.

[tlv]

Installed mine last week. Here’s my before and after dunk, with Harrop software. If any one has there’s also, it would be interested to compare, especially if you did a custom tune (?)

[tlv]

Originally Posted by tlv

Installed mine last week. Here’s my before and after dunk, with Harrop software. If any one has there’s also, it would be interested to compare, especially if you did a custom tune (?)

Darn autocorrect: ...before and after “dyno”

[mubarak]

I want to see the number for engine horsepower for Harrop kit in this Dyno
Dyno dynamic

Thank you

[beetos]

Are those getting custom tunes with the harrop supercharger able to tune out the rich bogging when you get into the throttle pedal at low to mid rpms? Logs show it goes horribly rich and you can feel a flat spot. Hate this about the standard harrop tune.

[tlv]

Originally Posted by beetos

Are those getting custom tunes with the harrop supercharger able to tune out the rich bogging when you get into the throttle pedal at low to mid rpms? Logs show it goes horribly rich and you can feel a flat spot. Hate this about the standard harrop tune.

I don’t know about that, but will look into with the tuner. Wanted to see how the Harrop tune did first. It seems fine (“great”) to me, but my first experience with a supercharger. Will post update with any pertinent info.

[beetos]

interesting. my car is otherwise perfect so not sure if there is something else amiss, but have heard others mention the flat spot at 2500-3300 when getting into the throttle. i hope this can be tuned out, seems to go very rich for some reason. Higher rpms feels fine.

[M.Hagen]

Originally Posted by beetos

interesting. my car is otherwise perfect so not sure if there is something else amiss, but have heard others mention the flat spot at 2500-3300 when getting into the throttle. i hope this can be tuned out, seems to go very rich for some reason. Higher rpms feels fine.

I am patiently waiting for an updated software calibration to fix the low-rpm stumble. 90% of the time it is very minor, but 10% of the time it is very noticable. Hard to replicate the conditions that cause minor-vs-severe, but it is my one wish to remedy.

[beetos]

Originally Posted by M.Hagen

I am patiently waiting for an updated software calibration to fix the low-rpm stumble. 90% of the time it is very minor, but 10% of the time it is very noticable. Hard to replicate the conditions that cause minor-vs-severe, but it is my one wish to remedy.

That's good to know. I think I find it more noticeable (more severe) than you do and it spoils my enjoyment of the car. I'm in Australia and bought my car with the Harrop kit already on it. The previous owner bought the kit new off an authorised Harrop dealer in Australia.

Are you going to BPM directly on this issue? I could contact them but I suspect they will tell me to go via the entity that sold the kit. Could you provide any further details on the software update so I can go back to the dealer that sold the kit and make my request for an update? (assuming that one is in the works).

Looking forward to stage 2......

Thanks in advance.

[beetos]

Originally Posted by BPMSport

This is the fueling going rich in case you slam your foot to the floor, and then leaning back out once it doesn't see full boost pressure. Will be ironed out in future revisions - we are doing some testing with different pressure sensors.

Need to update thread on progress with injectors and E85 - will chime in as soon as I can - but essentially I am having them flow tested to make sure the injector dead time/latency calculations are 100% spot on.

I guess this is the explanation for my issue.....Would be interesting to understand if Mike would be willing, why the mapping has to preempt slamming your foot down. I'm guessing its a shortcoming of boosting alpha-n set up without a MAP sensor that reads boost. In theory it should see TPS and TPS rate of change and use accel enrichment for the transient condition, and on top of that know where the supercharger bypass is positioned (that is linked to the TPS signal) and therefore know the boost at that RPM/TPS.

However, it could be the bypass is still moving and the system takes some time to generate its boost potential, and has to be mapped to account for the expected boost at that TPS/RPM, and will therefore run rich until the valve closed and the expected boost is realised.

My problem with that theory is that the rich conditions seems to last way too long and continues after the bypass has reached its final position so maybe the base alpha-n map is just way to rich at that point?

Would be much better if we could change out the stock MAP sensor in the idle strip to read boost and (if the stock software can) add pressure based fuel/timing modifiers to the alpha-n set up.....but I have no idea what the stock ECU is capable of.

Ultimately I would love a syvecs for the multiple traction set up maps, and all the other cool functions it has, plus the the ability for proper MAP based fuel / timing modifiers on top of alpha-n, but a lot of cash......

[Bimmer28312]

This is all great news ass I'm about to jump in a e92 m3 this summer. Still no concrete details on version 2??

[Soden82]

Originally Posted by Bimmer28312

This is all great news ass I'm about to jump in a e92 m3 this summer. Still no concrete details on version 2??

Same situation here. Hoping by the time I get in a properly spec'd m3 and save up the funds for a supercharger stage 2 will be available

[mubarak]

Originally Posted by mubarak

I want to see the number for engine horsepower for Harrop kit in this Dyno
Dyno dynamic

Thank you

Any answer to my question?

Thank you.

[Bakerboy]

Originally Posted by mubarak

Any answer to my question?

Thank you.

Originally Posted by mubarak

Any answer to my question?

Thank you.

Depends how a dyno is setup also, 2 of the same brand dyno setup differently can give vastly different numbers. That video looks like it would be evolve dyno in Luton U.K., this dyno gives optmistic figures and my car went on there for stage 2 n/a map.

[mubarak]

Originally Posted by Bakerboy

Depends how a dyno is setup also, 2 of the same brand dyno setup differently can give vastly different numbers. That video looks like it would be evolve dyno in Luton U.K., this dyno gives optmistic figures and my car went on there for stage 2 n/a map.

Is that mean their Dyno reading higher than Dyno jet.
To be honest I do not think so.
Dynojet is reading way higher and give misleading figures.
Do you agree with me on this?

[Bakerboy]

Originally Posted by mubarak

Is that mean their Dyno reading higher than Dyno jet.
To be honest I do not think so.
Dynojet is reading way higher and give misleading figures.
Do you agree with me on this?

Originally Posted by mubarak

Is that mean their Dyno reading higher than Dyno jet.
To be honest I do not think so.
Dynojet is reading way higher and give misleading figures.
Do you agree with me on this?

I don't want to spam this thread up as people are eager for news on the stage 2, but I do yes they all read different.

[mubarak]

Originally Posted by Bakerboy

I don't want to spam this thread up as people are eager for news on the stage 2, but I do yes they all read different.

Stage 2 is good ..but when?

Thank you.