Horse power recovery

KwackerJack

Just seen this on Fifth Gear

They had the old VW Scirocco (10 years old) 190 bhp when new but has 177 bhp 10 years on.

They put Redex in the tank with the required litres per bottle as per the instructions.

They the changed the oil and filter + air filter.

Then new plugs and leads.

Result : 188 Hp.....just 2 hp off new.

Any other way of helping build back up the HP??

ba_barabus

KwackerJack wrote: »

Any other way of helping build back up the HP??

I'd be more interested if they didn't bother with the redex and done the same test to see what results would be given

colm_mcm

Wasn't a corrado was it? 5th gear only out since 02

If the car is in bad need of a service then that's plausible.

KwackerJack

ba_barabus wrote: »

I'd be more interested if they didn't bother with the redex and done the same test to see what results would be given

According to them Redex gave a 6hp gain!

colm_mcm

Should've got edd china to terraclean it while they were at it.

KwackerJack

colm_mcm wrote: »

Wasn't a corrado was it? 5th gear only out since 02

If the car is in bad need of a service then that's plausible.

Its the new series.....looked like a scirocco Ill double check now

ba_barabus

KwackerJack wrote: »

Its the new series.....looked like a scirocco Ill double check now

I've not seen the show but I imagine given what you've said it's a Celica they used

colm_mcm

Would've been more like 20 years old if its a scirocco


Corrado vr6 would be around that power

KwackerJack

1995 Corrado V6

There were also testing the 1hp drop year theory hence my 10 year old mistake.

Anyhow seems the work did the trick all be it £300 worth

Guy:Incognito

ba_barabus wrote: »

I'd be more interested if they didn't bother with the redex and done the same test to see what results would be given

They checked the hp after each step though . So after just the redex it regained 6 or 8 hp iirc.

Id have been interested in seeing it in a different order or each step individually myself but theres no way to have 4 or 5 cars that have spent 10 years in identical conditions and tewatment to try them on.

Atlantic Dawn

From 30 minutes in, seems best improvement per £ is redex, £5 got almost 6hp improvement...

https://www.youtube.com/watch?v=oL_WNDbMX5E

tossy

I think horsepower recovery could be a fancy new word for a service,the car clearly wasn't well maintained mechanically.

Wossack

was it 190hp on that same dyno 10 years ago?

Guy:Incognito

Wossack wrote: »

was it 190hp on that same dyno 10 years ago?

190 is what VW reckoned it had from new

Wossack

dynos should only really be used for relative changes imo - ie, dyno run, do some tuning, dyno run, and make comparison (that work gave me +5hp etc).

Comparing absolute values in inherently flawed, as there's inconsistency between dynos.

Bobo78

And while they are at it, they should probably try to clean throttle and spray clean maf sensor to regain those 2 extra horsepower and increase their mpg.

ThisRegard

Wossack wrote: »

was it 190hp on that same dyno 10 years ago?

Doesn't matter, they used the same dyno to take a reading after each test so the results are relative.

corkgsxr

stupid test imo. different days will give you different results.

that much dyno runs would probably clear it out abit anyway.


eg on one dyno my gsxr made 98.8hp in febuary
on another on a moderate day made 109.98 hp
on a 28 degree day. 106.4 hp

if its not the same day same dyno its pointless.

KwackerJack

Iv'e used Redex before and other makes and they seem to clear out any little problems but nothing helps a car like a good regular service.

Unfortunately a lot of people never even check oil, water , tyre's etc. never mind make sure their car is fully serviced!

corkgsxr

injectors run a huge pressure.

half a litre of redex in 60 litres of fuel will bog all

thats a mix of 120 to one

Del2005

KwackerJack wrote: »

Just seen this on Fifth Gear

They had the old VW Scirocco (10 years old) 190 bhp when new but has 177 bhp 10 years on.

They put Redex in the tank with the required litres per bottle as per the instructions.

They the changed the oil and filter + air filter.

Then new plugs and leads.

Result : 188 Hp.....just 2 hp off new.

They did the test the wrong way round. It should have been dyno, service, dyno, redex, etc

First thing done to any car should be basic maintenance, then start checking out modifications/fuel additives

KwackerJack wrote: »

Any other way of helping build back up the HP??

NOS