I'll soon be getting a full de-cat exhaust and remap for my classic wrx. I've got a choice between going to Scoobyclinic and getting a magnex system + one of their remaps on a rolling road or going to API Engines and getting a Scooby Sport exhaust + remap on road with me driving.

Both companies have excellent reputations,
Both are around the same price and an equal hassle-factor for me to get to.

So which one do you think is best?

Thanks in advance for any advice.

 

Both use the same mapper!

AFAIK!

NS04

 

Any advantage to mapping on the road rather than on a rolling road?

 

APi Of course !!

David APi Engines / APi Impreza
www.apiengines.com

 

Best to ask the mappers, but at a guess I'd say that the advantage of a rolling road is that you don't have to worry about traffic and road conditions etc.. so it's easier to modulate the revs, boost etc...... to what the mapper needs at a particular point in time without the interuptions. I'd guess that the disadvantge of this control over the environment is that its harder to map to take account of your driving style and personal preferences in the characteristics of the power delivery, which -i'm guessing- is easier on the road!

Just a guess though!!

NS04

 

Personally I would get it mapped on the road (its where you drive the car so the loads will be the same), you can also map it in 4th gear to keep speeds down.

And you don't have to drive like a lunatic, the mapper is generally looking at a laptop. So if its not save to accelerate then tell them and wait until it is.

Dave.

 

Personally i think a rolling road map (to help with the high speed/high load stuff in a safe environment) then tailored out on the road would be a good choice. But i'd say that it's essential the map is at least finished on the road, i'd never trust a car only set up on the rollers. All IMHO tho

Tony.

 

LOL

Mapper: Ok, I need full boost in 5th gear!!!
Driver: Before or after we've hit the bus?!?!?!
Both: AAAARRRRGGGHHHH!!!

NS04

 

you get the best of both worlds at the clinic, we do most of the map on the rollers then onto the road for the final tweaks


hope this helps!


ads

 

I would most certainly prefer on the road, driver oriented tuning! It is doubtable whether a rolling road would give you even a distant simulation of your specific driving style.
You can have 300bhp tuned on rolling road and never see them against a Civic Type R for a example-a shame. You should insist on getting the final adjustments on the road. Choose a nice and quiet hour and go for it.

 

Thanks for the opinions...seems like there's not much in it really!

 

Can you explain to me how driving style can influence engine mapping (unless you like to load the car up on the brakes ).

Tony.

 

You cannot map a car "properly" on the road, it is impossible to hold the various load sites once the turbo starts to spool up. It is dangerous and very hard on the brakes trying to simulate / hold the various load sites. Agree the best principle is to map it on the rollers holding steady state at each load site and adjusting fueling / ignition to suit. Once finished the car should then go out on the road to adjust the boost control / ISCV and other real world driving parameters.

As Tony said, how does driving style influence the engine AFR / ignition map?

advertising removed by PH

 

in that case depends on price and whos buying you a cooked lunch

 

which exhaust system do you like the sound of?

 

Mine was mapped on scoobyclinics rolling road, I agree with doing both

Its just not sensible mapping mine on the road, plus when it breaks its allready within pushing distance of the ramps

David

 

Back together yet m8?

 

David - how did you find the remap at Scoobyclinic? Did you drive for the final tailoring of the map on road?
Cheers.

 

Some more info:

Scoobyclinic are saying with an exhaust (full de-cat) and remap (plug in 'piggy back' chip remapped by themselves on a rolling road and actual road) the car should achieve EITHER 275/280 bhp OR 310/315 bhp but are unsure why wrx's seem too come in at either one of these power levels. I would obviously be happy with 310 bhp but 275 bhp doesn't seem like such a bargain for around £1200 - I thought I'd get around that just with the exhaust on a '96 wrx. What do people reckon?

API is claiming 290-300bhp after the exhaust and a remap which used a solder in chip and is mapped on road (external mapper I think?), can power figures be measured without a rolling road?

Peoples opinions are appreciated. Its seems like quite a spread of power figures to be quoting for similar cost (I realise there are no guarantees to power achieved with this sort of work).

 

I wouldn't expect shed loads of extra grunt from just a zorst and map but then again my expectations will be different to yours!

Power isn't cheap!
F

 

I had mine done at api (pat) and will be on the rolling road in 2 weeks so i can let you know then.

I think you may have fuelling issues above 300bhp on your standard injectors and fuel pump, and would have thought 280-300 is more realistic.

1996 wrx produces 260ps = 256bhp
Add in lower octane fuel and you might be putting out 250bhp.
Full decat and exhaust may bring you up to 268bhp.
The remap might take you on to 285bhp.

A bit of guesstimation but shows how you may well be producing less power than you thought due to PS/BHP and octane differences

 

Rolling road results depend on many factors...and you will find different rollers will give you different results...

Though i am planning to visit ScoobyClinic to make a run on my next visit up North.. Providing i don't get lost...

 

I think thats a matter of opinion. The mapper should already have a fairly close base map to work from and then its easy to map on the real road. Had mine mapped by AndyF on the road and had no probs.

If the mapper doesnt have a close base map to start from then that may be another matter, but I'd rather the development work be tried and tested elsewhere before having it mapped onto mine.

As for driving style, if think different people have differing prefs on how they want boost to come in etc.

I would always go for a 'real road' map.

Bob

 

Roojai - hare you happy with the car after the remap at API?
Anyone else got any experience of either Scoobyclinic's or API's remaps they'd like to share?
Cheers.

 

If Pat is mapping at either place I would base the decision on which exhaust I perfer and price.

Bob

 

Scoobyclinic told me they map it themselves, so I'm assuming that means they don't use Pat.

For those of us who don't know - what's the difference between a solder-in chip (as used by API) and the plug-in 'piggy-back' chip (as used by Scoobyclinic) in terms of performance, flexibility etc?

Thanks.

 

we do use pat for our mapping both "scoobyecu"& Ecutek

 

PMSL, Andy gave me a clip round the ear (although very delicately put ) for doing what he asked when he asked during the first mapping session.