Heat soak TMIC and filter size. Help please.

[SonnyRoby]

So the car is a 306 sedan from 96. xud7 engine with 9mm bosch, turned lda pin, k14 at 0.9-1bar, xud9 gearbox, straight through exhaust. Made a hood scoop but it looks like is inefficient. When cold it reaches around 1 bar of boost. After it get's warm and start to get rough with it the boost crashes to around 0.4-0.5 bars. The turbo runs defiltered so warm air from the engine.

Is there any change except fmic to reduce heat soak?

The next thing i has thinking was if i can fit a small air filter (motorcycle or for horizantal carburators) direct to the turbo. Are those filter permisive enough? What size is the inlet on a k14?

Will attach some pictures with the hood scoop.

[Kwik]

have you got the bonnet lining for the topmount?

also run a cold air feed from the grill to inlet like it was designed to. if you've got all the air tubing use it

[strictly_perv]

Water injection should do the trick

[Dave]

This isnt right, your boost shouldnt halve when its hot, those kind of boost pressures from a K14 shouldnt really cause severe heatsoak anyway. Does it black smoke on boost when it does this?

[strictly_perv]

How come it's got an XUD7 in? Never knew they had them in 306. Also I assume you fitted the cooler on too?

[Kwik]

that's why i asked about the bonnet lining Dave that's the only thing i could think that could cause something like that

[SonnyRoby]

No bonnet lining. It's a xud7te from a 205 d-turbo. Mounted the intercooler myself. Not too much extra fuel so can't really figure out the lack of boost after getting warm.

[Kwik]

get the bonnet lining will make the world of difference as it will

a) give it a seal

b) provide a cold air feed when moving

[SonnyRoby]

I need a new bonnet with a proper good lining then

[Kwik]

no you can goto a scrapyard and find a turbo diesel 306 and just take the lining out of the bonnet

[SonnyRoby]

Can't put the lining back because of the hole.

Ok. And about the air filters?

[Kwik]

no in the lining cut a hole that matches the hole of your bonnet vent.

and for air filter see if you can go back to as close as stock as possible