air intake help

[Cooky1996]

Hi i'm after some intake help, i bought a blob sti a couple of weeks ago and it came with a short cone filter.

the filter was covered in holes and burns so instead of replacing it i removed it and opted for the standard airbox setup (minus the resonator) with a green performance panel filter.

since then i have noticed a lot more turbo lag, turbo seems to hit full boost at around 3500rpm, instead of 2800rpm before.

The car has been remapped previously and i wonder if the map was written for the short intake previously on it?

My question is do i need to get the car mapped again to accompany for the different intake?

Any advice would be appreciated.

cheers

[savage bulldogs]

Good posibily that the bigger dia maf tube , spun trumpet and cone filter had been mapped in previously. As it would normally have run a bit rough without those mapped in in the first place . 

I'd imagine it might be running a bit rich with a more restrictive air intake , although the standard air box set up is (supposedly) good for low 400hp.

The ecu might "learn " the new (old oe) air box but it could also be pulling timing and adjusting fuelling for safety. 

If the ecu is locked to a mapper and you don't know who or don't want to use them , maybe get a dyno health check done for piece of mind (about £60) 

 

[Cooky1996]

57 minutes ago, savage bulldogs said:

Good posibily that the bigger dia maf tube , spun trumpet and cone filter had been mapped in previously. As it would normally have run a bit rough without those mapped in in the first place . 

I'd imagine it might be running a bit rich with a more restrictive air intake , although the standard air box set up is (supposedly) good for low 400hp.

The ecu might "learn " the new (old oe) air box but it could also be pulling timing and adjusting fuelling for safety. 

If the ecu is locked to a mapper and you don't know who or don't want to use them , maybe get a dyno health check done for piece of mind (about £60) 

 

Thanks for the reply, I did disconnect the Battery for about an hour and drain all of the capacitors in hope that it reset the ecu when I installed it all, everything runs ok and power doesn’t seem to have dropped at all but is just seems higher up in the rev range!

i will take your advice and try and track down the original mapper to se if he can try and balance everything out for me.

thanks again

[savage bulldogs]

No problem,  disconnecting the Battery and letting the system fully discharge ,is supposed to reset the ecu but only any codes and possibly anything "learned" by the ecu .

If it's been mapped the new map will be the stock map , so it won't revert back to the factory "stock" map . 

It's probably been mapped using ecutek and shouldn't cost much to tweek the map if you can find the person who mapped it . If not it will probably mean you'd have to pay another mapper for the tweek and another ecutek licence fee (about £150 ).

Best of luck with it 👍