Generic Vs Custom Remapping
Discussion
Is the stigma of generic remaps justified still?
Ok, Ok, stop shouting at me, custom is always better.. but why are generic maps still thought of as the work of the devil?
Before you answer, Just humour me for a sec here..
If vauxhall can do a generic map when they build at the factory that's good enough for all road cars why can't someone update that map that will again be ok for a standard vxr ?
As long as tolerances are built in as with the factory map and as long as the new map has been properly tested on a test car why can't a decent, legitimate tuner do a generic map for a generic car?
It's no different to when vauxhall release a software update and get dealers to update your car, they haven't tested it on your car have they? But it will work.
I get that there are dodgy outfits that will take your money and give you a map that promises the earth but you can't say 'it's impossible to map a car without road testing each car the map goes on' because clearly you can!
I've had the angel tuning map now for 6 months and apart from the vacuum pipe popping off and the dreaded gearbox whine I have had no problems and the every day mpg has improved by around 5! (Spreadsheet vs onboard computer average)
I don't care about the claims of bhp increases I go on how it feels, and it feels a lot smoother and a lot more grunt midrange
Did a real rough 60-100 run - managed 7.7 seconds - even if you add a second on to allow for the timing gear that's still respectable !
Everything on the car is standard so it doesn't need a custom map? I haven't had so much as an engine management light flash at me since it was done and it's going better and better on fuel.
Plus it was £200 cheaper than the cheapest custom map.
what do you think?
Well it all depends on what modifications are done to the car. When I had my Golf GTI, I went for a Revo stage 1 remap because I new it had been developed for the car, and would be reliable. But if you have some heavy modification with large amounts of BHP increase then go for a custom map to take advantages of all the modification done to the car.
Vauxhall spend millions developing the car, they invest time and effort to produce a map that provides their desired performance envelope whilst being able to cater for many varying markets. Extremes in temperature, altitude etc all helped by adapting maps based on sensor input.
You cannot call it generic. Its specific, it caters for tollerances and variances in each car and is programmed onto the safe side to ensure consistency across the range and reliability.
Take it to 90% of the off the shelf tuners and they don't care, they'll sell you on super doper mpg increases (why cannot the manufacturer do this? They can, they don't for good reason) or increase (snigger) bhp which are never proven with before and after dyno outputs. What most of these tunes do is simple, remap throttle position maps = seat of the pants if feels like you've just got an extra 400bhp (example for this e39 m5 has a "sport" button, press it and it feels like an extra 50bhp just kicked in but instead all that's happened is a 1:1 throttle map is applied). On turbo's these chips increase boost or on diesels increase injector pulse widths.
You do a generic you roll the dice, you roll the dice with a custom too but at lest there a good tuner will use AFR, IAT, AT, spark map etc and a raft more to finesse the tune to your specific cars tolerances.
You cannot call it generic. Its specific, it caters for tollerances and variances in each car and is programmed onto the safe side to ensure consistency across the range and reliability.
Take it to 90% of the off the shelf tuners and they don't care, they'll sell you on super doper mpg increases (why cannot the manufacturer do this? They can, they don't for good reason) or increase (snigger) bhp which are never proven with before and after dyno outputs. What most of these tunes do is simple, remap throttle position maps = seat of the pants if feels like you've just got an extra 400bhp (example for this e39 m5 has a "sport" button, press it and it feels like an extra 50bhp just kicked in but instead all that's happened is a 1:1 throttle map is applied). On turbo's these chips increase boost or on diesels increase injector pulse widths.
You do a generic you roll the dice, you roll the dice with a custom too but at lest there a good tuner will use AFR, IAT, AT, spark map etc and a raft more to finesse the tune to your specific cars tolerances.
Hair Flick said:
Vauxhall spend millions developing the car, they invest time and effort to produce a map that provides their desired performance envelope whilst being able to cater for many varying markets. Extremes in temperature, altitude etc all helped by adapting maps based on sensor input.
You cannot call it generic. Its specific, it caters for tollerances and variances in each car and is programmed onto the safe side to ensure consistency across the range and reliability.
Take it to 90% of the off the shelf tuners and they don't care, they'll sell you on super doper mpg increases (why cannot the manufacturer do this? They can, they don't for good reason) or increase (snigger) bhp which are never proven with before and after dyno outputs. What most of these tunes do is simple, remap throttle position maps = seat of the pants if feels like you've just got an extra 400bhp (example for this e39 m5 has a "sport" button, press it and it feels like an extra 50bhp just kicked in but instead all that's happened is a 1:1 throttle map is applied). On turbo's these chips increase boost or on diesels increase injector pulse widths.
You do a generic you roll the dice, you roll the dice with a custom too but at lest there a good tuner will use AFR, IAT, AT, spark map etc and a raft more to finesse the tune to your specific cars tolerances.
Well, no...You cannot call it generic. Its specific, it caters for tollerances and variances in each car and is programmed onto the safe side to ensure consistency across the range and reliability.
Take it to 90% of the off the shelf tuners and they don't care, they'll sell you on super doper mpg increases (why cannot the manufacturer do this? They can, they don't for good reason) or increase (snigger) bhp which are never proven with before and after dyno outputs. What most of these tunes do is simple, remap throttle position maps = seat of the pants if feels like you've just got an extra 400bhp (example for this e39 m5 has a "sport" button, press it and it feels like an extra 50bhp just kicked in but instead all that's happened is a 1:1 throttle map is applied). On turbo's these chips increase boost or on diesels increase injector pulse widths.
You do a generic you roll the dice, you roll the dice with a custom too but at lest there a good tuner will use AFR, IAT, AT, spark map etc and a raft more to finesse the tune to your specific cars tolerances.
I had a before and after remap dyno figure, done by me, at an independent dyno, paid for by me. Stock, 155kw at the wheels. Remap and air intake fitted. 187kw plus a good increase in torque as well.
A generic tune, adapted for a specific engine, such as Revo, APR, Bluefin, GIAC etc etc do take into account the base line AFR, boost etc. I tweaked my generic tune, constantly measuring AFR, boost levels etc.
I've ended up with a tune with a conservative boost spike for the engine (stock it is around 19PSI, my tune is 24PSI, accepted wisdom is don't exceed 28PSI), strong torque curve and a good AFR.
Your position is pretty narrow minded and about 20 years out of date.
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