Possible Auto Issues

[bluboy]

hey there guys, Ive done an extensive search but to no avail.

i own an R32GTS T auto with a S1 rb25+auto convertion done, so far ive replaced:

coil packs

plugs- bkr5eix-11 regapped to .8

fuel pump

fuel filter

air filter

tested afm

stock 7lb actuator with no boost controller

Mods:

3" split dump to 3" trust jasma exhaust

fmic

pod with cover

auto box strengthend

The motor seems to run fine and diagnostic code shows 55 (all clear)

Now the problem i have been noticing is, in second gear or higher, when i put my foot down gradually i can hear and feel the boost coming on fine, but then the power just sort of drops off, it is still accelerating, but not as it should be.

If i give the throttle more of a stab, it drops back a gear fine and away she goes. it only seems to be when feeding on the power.

I have done all the nessisary checks for boost leaks and its holding a good solid 7-8lb

which leads me to believe maybe there could be a possible issue with the stock torque converter because also, if i put my foot flat to the floor and then back off, even at 100km/h the motor will go back to idle and the converter appears to not re-engage till i bring the revs back up to where i backed off or switch off the car and turn it back on.

This morning i checked my auto fluid level and it was a little over the full line but not sure if this could be causing any issues.

any help would be greatly appreciated.

Blu

[mad082]

there could be an issue with the torque converter, or even the ECU for the gearbox.

one thing i did notice is that you are running heat range 5 plugs. for a turbo car you are better off running heat range 6. running the 5's you may be getting a lot of pinging and the ecu could be backing off the timing and therefore making it feel slow.

[bluboy]

that is a good point. was wondering that myself i will try the same plugs in 6 or possibly 7?

thanks Blu

Edited October 4, 2010 by bluboy

[mad082]

i'd just go 6's unless you are running pretty high boost (over 15psi)

[bluboy]

ok will do thanks mate. but will 7s be fine for now if i plan to run more boost later?

[mad082]

the colder the plug the quicker they foul up and make it run poorly. if you just get copper plugs in 6's now it will only cost you about $30 for the set, then change them every 5,000 to 10,000kms (so either every oil change or every second oil change), then you can just change them when you do plan to run more boost, but realistically, while you are on the stock turbo 6's will be fine no matter what boost you run.