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11th July 2020, 17:51 | #1 |
Can't help myself
Rover 75 CDTi 2005 Join Date: Jan 2018
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Synergy 2a survey
I fitted a box with switch to my CDTi just before I accidentally bought the ZT so have only done 30 minutes' testing. I'm seriously impressed though, particularly as it works on top of the 160 remap I had done a couple of years ago. I've read several anecdotal reports of damage to fuel pumps due to the increased fuel pressure which the box uses but have not read any "documented" reports which would provide evidence for this. So my question is:-
These have been popular add-ons over the years so a survey of owners' experiences with them will be useful. Please keep replies to actual experiences - positive or negative - rather than explanations or opinions. Thanks. Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 139,000 miles Last edited by goltho; 11th July 2020 at 17:54.. |
11th July 2020, 19:21 | #2 | |
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Quote:
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11th July 2020, 23:02 | #3 |
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Have good read of the link below, it may give you the answer you are searching for.
https://www.the75andztclub.co.uk/for...d.php?t=174721 You can also find a lot other answers here below https://www.the75andztclub.co.uk/for...-11-p-136.html
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11th July 2020, 23:22 | #4 |
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I have had to replace high pressure pump seals on a couple of cars that have had the synergy (Or similar) Box fitted.
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Lest we forget..
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11th July 2020, 23:26 | #5 | |
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Rover 75 CDTi 2005 Join Date: Jan 2018
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Quote:
Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 139,000 miles |
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11th July 2020, 23:52 | #6 | |
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Rover 75 CDTi 2005 Join Date: Jan 2018
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Quote:
It wasn't my purpose to look at remaps as I've not seen any anecdotal evidence of damage to cars. Interestingly though, it's become clear that there is considerable doubt whether the so-called 160 map provides anything like 160bhp. There's no doubt there is some improvement but no evidence I can find to corroborate the 160 claim. Conversely, there seems to be some which negates it (technical performance limits for one). I can't find any reference to anyone having the remap checked afterwards to ascertain how much power increase their car actually had (I certainly didn't). But that's not the question here, which is about finding or challenging hard evidence of the Synergy box indirectly causing damage to the high pressure fuel pump by overstressing seals. This excellent summary by 75Connie is well-thought through and in my view, a good and impartial summary of his investigations which ask the same questions as I'm asking. There's a lot of coverage of the synergy -v- fuel pump assertions but I'm seeing very little informed comment; mostly personality bias which is understandable but also irrelevant. Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 139,000 miles Last edited by goltho; 12th July 2020 at 22:45.. |
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12th July 2020, 17:10 | #7 | |
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Quote:
Following the remap I never refitted the tuning box and sold it on as the common consensus was that you couldn't use the two at the same time. I have used tuning boxes on other cars for years and haven't ever had any failure (now I've said that.....). I acquired a box recently which didn't have the correct connectors for the car to which it was intended. It did however have the connectors which would fit the Rover. So, I know you can't use both but a quick try? What harm could it do? In all honesty the Rover is far quicker in acceleration than it was with just the remap. Not sure how that can be since the remap was the supposed max available? Maybe my remap has fallen off somehow? The car is serviced regularly and has no issues. It puts out no black smoke with the box plugged in or not. Wether the box stays or goes I'm undecided. I tried it as an experiment and was surprised at the increase. I have also read many anecdotal suggestions of such a box causing the HP pump to fail but would question how much a failed HP pump could be attributable to a tuning box. As I say, I've used them for years, as have friends, and I can't say I've heard directly of a failure. Maybe tuning box quality varies or the way they're used by the driver causes the failure? An interesting conversation. Sent from my SM-G935F using Tapatalk |
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12th July 2020, 17:31 | #8 | |
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Quote:
The nearest T4 guy is miles away so it's looking like a Ron box might be the best option. Regarding your comment about the map 'falling off', I wonder if it's the ECU's self adaptive parameters causing it. Would make sense as the boxes' response would always be the same but the ECU's wouldn't necessarily? |
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12th July 2020, 22:27 | #9 |
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I ran a Synergy 2a box on top of a Superchips 150bhp map and I ran a RR before and after with a few more BHP but nearly 50Lb/Ft added. I ran this for some 80000 miles with no issue.
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12th July 2020, 22:36 | #10 | ||
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Rover 75 CDTi 2005 Join Date: Jan 2018
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Quote:
The Synergy box provides power in a different way (fuel pressure) and without doubt brings some smiley faces to the party, with or without a remap. One thing I'd not considered but which I am now, is that the (still anecdotal) fuel pump horror stories are likely more to do with commercial interests than technical ones. Quote:
Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 139,000 miles Last edited by goltho; 12th July 2020 at 22:43.. |
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