Generous Dyno?

[Sandals]

So apparently this mapper can get TD04's over 300BHP. Generous dyno giving an exaggerated flywheel figure?

 

 

[Tidgy]

Yeah saw this, i expect the dyno is being generous. Also hot days tend to skew figures higher because the dyno over corrects.

i'd like to see the actual printout, but i highly doubt its actualy over 300bhp

 

[Sandals]

Especially since he mentions that the mapper has had a few more hp out of a TD04 before...

[Tidgy]

I still remember a fudged figure at a dyno day, 286bhp, out if a 2.0 sport? Brought some sniggers but highlights a point of how easy it is to fudge.

[savage bulldogs]

I was having a discussion about what a tdo4 blob wrx would probably get on a remap . Typically 260 to 280 is the norm with minimal supporting mods afaik .

 I have seen graphs for closer to 300 and a few even slightly over , I think these generally are over compensated dyno calibrations or pushed to the limit in cold conditions . Don't get me wrong some ej's will make better power than others and I've read that some tuners "cheat" a bit and use the tdo4 off the ej25 which apparently has a slightly bigger hotside (not that I know that's a fact) 

Its not a good idea imo to map a car at any components limit ,especially during the winter's colder denser air .  As when driven in the summer months and coupled with a heat soaked tmic the (wound up to the max) tdo4 basically turns into a hair dryer,  pushing nothing but hot air due to running above the small compressor wheel tdo4's efficiency range (Causing detonation)

 

I haven't watched the vid but if he says he can get 300hp + out of most of the newage wrx's with minimal mods ?

 I wonder if he recommends changing the precat up pipe to a less restrictive one or any heatsoak prevention  and what the longevity has been of the scoobs with turbos he's pushed over their efficiency range?

I've found some mappers map for figures to "big up " themselves (sod the longevity)

some map for a balance of power , economy and with a margin of safety accounting for a components failure or limits .

 

Some are just plain !Removed!  

 

 

[Tidgy]

3 hours ago, savage bulldogs said:

I was having a discussion about what a tdo4 blob wrx would probably get on a remap . Typically 260 to 280 is the norm with minimal supporting mods afaik .

 I have seen graphs for closer to 300 and a few even slightly over , I think these generally are over compensated dyno calibrations or pushed to the limit in cold conditions . Don't get me wrong some ej's will make better power than others and I've read that some tuners "cheat" a bit and use the tdo4 off the ej25 which apparently has a slightly bigger hotside (not that I know that's a fact) 

Its not a good idea imo to map a car at any components limit ,especially during the winter's colder denser air .  As when driven in the summer months and coupled with a heat soaked tmic the (wound up to the max) tdo4 basically turns into a hair dryer,  pushing nothing but hot air due to running above the small compressor wheel tdo4's efficiency range (Causing detonation)

 

I haven't watched the vid but if he says he can get 300hp + out of most of the newage wrx's with minimal mods ?

 I wonder if he recommends changing the precat up pipe to a less restrictive one or any heatsoak prevention  and what the longevity has been of the scoobs with turbos he's pushed over their efficiency range?

I've found some mappers map for figures to "big up " themselves (sod the longevity)

some map for a balance of power , economy and with a margin of safety accounting for a components failure or limits .

 

Some are just plain !Removed!  

 

 

 

im yet to see any stock td04's make 300 without some sort of discrepancy with the graphs/settings on the dyno/temp correction. Hybrids are a different kettle of fish though of course.

 

Hot days tend to give better figures than cold days due to over correction, which doesn't happen on hot days due to that correction not being there.

[Sandals]

When I got my WRX mapped it made 210hp at the wheels and the injectors were maxed out... The dyno never gave me an estimated flywheel hp

[savage bulldogs]

Definitely hybrids are different story ,  as the bigger compressor wheels will  push more air efficiently  , keeping the charge temps down a bit and making more power .

I did watch the vid and soon as the mapper stops the run he says "you can go and pick your pistons up now " which makes me think the customer has made him push the td04 and fmic combo , just for numbers and not drivability or longevity. 

I agree tidgy , I've only seen power graphs and not the correction factors or whether calibration runs have been done previously. 

The tdo4 is a good point to point quick spooling turbo when coupled with a tmic. Ideal for 260 to 285hp but why people insist on trying to squeeze more power from them (Just to prove a point) I will never understand tbh .