Power Loss After Front Mount Instal

[original]

Hi, I have just installed a Hybrid front mount kit on my r32 Rb20, the install was down excellently but when i took it for a test drive the car was really quick and zippy up until 5000rpm then it filt like it was restricting or sort of reving but not going anywhere, i cant work out the problem..the car is running standard boost (which is about 9-10psi because i have a 3 inch turbo back exhaust and filter..the boost looks like it is now around 11 psi because of the front mount).

if anybody can shed some light on this problem or if they have had any problem which is similar could they please let me know what i can do about it

thanks

[Cubes]

Leaning out?

After mods you are always worth while getting a power run done to see if there are any problems.

[caminperth]

Are you running a standard clutch? I'd say revving without going anywhere says that the clutch is slipping. Cooler may have unlocked some extra power and tipped the clutch over the edge?

[original]

nah the clutch is definetely not slipping it feels like the motor cant keep up with the revs or something and after 5 grand it sort of lags........if i put my foot to the floor you notice the "holding back" of the motor at 5 grand heaps more then if i ease it past 5 grand gradually....

is it worth getting it tuned (what could they tune if i dont have a standard computer??????)

[Cubes]

Before you even think about getting it tuned throw it on the dyno for a diagnostic dyno run.

Prices here in Adelaide vary from as low as $35 right up to around $80. So shop around.

I had mine get the $35 power run, they set timing and gave it a power run.

Grabbed a print out of boost & AFR's. It told me she was leaning out

Leaning out makes a car feel flat, if its not leaning out then have a look to see if your knock sensor plugs have wiggled loose & throw your ecu in to diag mode to check if indeed the knock sensors have given strange readings as of late (hit the search button for an ecu diag.)

It could also be your sparky's not liking the little bit extra boost and breaking down causing power to go flat.

[gtrGhosTDoGG11]

Wheres a good place thats cheap to get the diagnostic dyno run?

[inissane]

could it just be getting to point where the rb20 turbo is running out of puff, my old CA18DET would be like that because it had all the bolt ons but the stock turbo would run out of huff at like 5000rpm

could be completely wrong though just an idea

[race_snooze]

think about the boost retard stock ecu have boost cuts do they not, so putting on a fmic you have brought up your boost.!!!!!!!

[maximumrpm]

im having exactly the same problem with my r33 s1 but my power is flat over 4500rpm...im thinking of gapping the plugs at 0.8mm and getting a safc and then getting it dynoed

[maximumrpm]

and exactly the same mods

[R33S2]

When I installed my FMIC I was advised to retune as there is a danger of leaning out.

[Cubes]

Ghostdog,

Blackwood Auto and Dyno charge $35.

[Cubes]

The stock rb20 turbo isn't running out of puff and the R32's don't have the same ecu retard/rich issues.

So its neither of those.

I am leaning strongly towards the plugs and leaning out. Especially if you are running the stock fuel pump.