Memjet sensor thing

Montanarolo Posts : 14 Join date : 2020-01-28

Greetings from Tasmania, just fitted a memjet gadget to my 06 850 mainly to overcome leanness at idle and stutter at 5k. Fits in 5 minutes, 10 adjustment levels (on 5 at thr mo). Instant improvement pulls hard all the way, no dips or plateau. I bought from Italy but found out I could have bought local. Don’t know ( or care ) about consumption yet. This bike had “beetle” map by previous, any way to tell? Cheers Pete

GRiSO Capo Posts : 10420 Join date : 2013-05-30 Age : 67

I would strongly advise against leaving the memjet crap on it.

If it had had one of Mark's maps in it you wouldn't of considered an add on widget.

What was it doing at idle that made you think it needed a widget?

Montanarolo Posts : 14 Join date : 2020-01-28

Same as my 14 bmw f800 , shithouse to ride in heavy traffic, lean band around 100 km , typical factory emission set up. Me mjet working well. Problems?

GRiSO Capo Posts : 10420 Join date : 2013-05-30 Age : 67

Sounds like it needed tuning properly.

Memjet is a sensor fooler, from memory air temperature sensor. If it is the ecu will trim around it in a short time. If it's an O2 sensor fooler it can cause a high risk of 'Service' errors due to pushing the ECU out of its comfort zone and throwing it into limp mode and/or cause grotesque over fuelling with associated bore, ring and guide wear.

Who last balanced the throttle bodies? Has the TPS been recalibrated after that was done? Has anybody tried to lower the idle speed by screwing out the throttle stop screw? Is the paint still intact on the linkage rod ball joints?

Pete

Montanarolo Posts : 14 Join date : 2020-01-28

Sheesh I was just sayin.....I think I might go play somewhere nicer

GRiSO Capo Posts : 10420 Join date : 2013-05-30 Age : 67

Mate, I'm trying to help you.

L'Innominato Posts : 3342 Join date : 2013-05-30 Age : 64

Eldo,

Don't misread Pete's tone, he really is trying to help you tune your GRiSO properly to get the most out of it and more importantly to help you avoid potential disaster. There is no place nicer, everyone on here is passionate about Grisos and some, like Pete Roper are experts in their care and feeding.

Pete (Street)

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Montanarolo Posts : 14 Join date : 2020-01-28

No problems, my 850 is my daily and I love riding it I guess my point was we all know why harleys,BMW moto Guzzi leave the factory tuned for emissions not ride ability . The f800 was cured with xfied lamba probe, the moto Guzzi has been transformed by the memjet air temp/press sensor approach. Both gadgets have made both these bikes much more enjoyable to ride. They both use a bit more gas but no dirty pipes. Don’t know how or care, cheers pete

GRiSO Capo Posts : 10048 Join date : 2013-10-01

May I ask whom you purchased it off? I might be able to tell you if it had one of my maps in it.

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GRiSO Capo Posts : 10420 Join date : 2013-05-30 Age : 67

Ah. Thread was moved!

Montanarolo Posts : 14 Join date : 2020-01-28

Hi, I bought it from a guy near richmond nsw who worked for the airforce, 2nd owner maybe. Will vin help ?

Don Abbondio Posts : 6080 Join date : 2014-03-14 Age : 69

GRiSO Capo Posts : 10048 Join date : 2013-10-01

Eldo850 wrote:: Will vin help ?

Nah. Was it Ian?

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Montanarolo Posts : 14 Join date : 2020-01-28

Yep,

GRiSO Capo Posts : 10048 Join date : 2013-10-01

Yeah, Ian had one of my maps. He was running without a dB killer. No idea whether he stuck the stock map back in when he sold it.

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GRiSO Capo Posts : 10420 Join date : 2013-05-30 Age : 67

Well, I'll make the offer.

I'm going to be in Tassie in the last week of Feb. if you'd like me to fling the laptop, cables and a manometer in my bag and come and check it out I can. Where are you?

Montanarolo Posts : 14 Join date : 2020-01-28

Well Pete , that’s an offer I can’t refuse. We’re in Sandford, near Hobart you’re welcome anytime. Do you know the bike ? It came with a titanium muffler in a box but Ian said it was a bit loud, now running a mg pipe

GRiSO Capo Posts : 10420 Join date : 2013-05-30 Age : 67

When you say an MG pipe do you mean the factory conical silencer or the Termi aftermarket item.

Please believe me these sorts of things, along with the ones I asked earlier, are important.

I'm not casting any aspersions on your, or anybody else's abilities or understanding, but to try and diagnose issues I need to ask direct questions and need direct, honest, answers.

The fact is that every 'Add on' widget is a cludge and some of them really are damaging. The W5AM controller is an open book but to even take a stab at mapping a bike any specialist, (Not me!) needs to know a LOT about the bike, it's history and it's set-up.

Without honest and accurate information none of us can help get your bike running better.

GRiSO Capo Posts : 10048 Join date : 2013-10-01

Probably why it didn't run great. It was mapped for a very loud pipe, free flowing pipe. The map was a one-off.

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Don Abbondio Posts : 27 Join date : 2015-10-10

My 1100 came with a Memjet fitted (at 5 on the dial), and the previous owner had lost the baffle for the Zard.
Runs great so I've left everything as it is.

Godfather Posts : 3154 Join date : 2013-05-29 Age : 59

Pete Roper wrote:: Ah. Thread was moved!

Yeah Pete, that was me... The thread belonged over here in GRiSOlogy, not in the Darkened Recess. I'll delete your other thread over there as well

Back on the same page now.

SD

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2012 MOTO GUZZI GRiSO 1200SE

2013 MOTO GUZZI STELVIO 1200NTX - Orange Blossom Special

Montanarolo Posts : 14 Join date : 2020-01-28

Hi again, so my mate Charlie bought the pipe that the map was configured for and hey presto, runs like a stolen one. Nice off idle, pulls hard, no flats. Remove memjet, job done. Thanks

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