Sluggish under load...

[Squig]

Decided to see if cleaning the filter had any effect this evening so Emma and I got to the usual quiet 60 road and stopped, set the timer and made the run... twice as the first 0-60 came out at 4.5 seconds which is impossible, nice but decidedly wrong.
On the second run the problems started, I have been a little suspect for a few days as she's felt a little down on power, not significantly just not as keen as usual.
I have been, as Gaz knows, running a consistent 7 sec 0-60 with the TC on... both the above runs have been with TC off (and yes Emma stopped the clock at an actual indicated 60mph not a wheel spin 60mph).
On the second run I fed in power allowing some clutch slip and in second dipped the power allowing the tyres to grip, I could feel the engine holding back through second once the tyres gripped resulting in 7.9 seconds.

I will be trying some Forte injector cleaner, remove and clean breathers and was wondering if anyone has any other suggestions?
I'm sure this wasn't clutch slip as the power "loss" (wrong word there as it's really quite mild) fluctuated.

[cav_2.0_gli]

deja vu!!!

have you got slingshot acceleration at all???

sounds like mine. mines definately down on power. has been for agges.

however, ive got an Omega 3.0 V6 Elite sat on my driveway, waiting for its engine to be removed and fitted in my cavy

[Squig]

you have to use your old sump too... no slingshot feeling thou... going to hook an ammeter up to the battery and change the fuel filter too as that's not been done for a while... then the lines as they where a bodge and weathers been crap so I've not got round to redoing that yet...

[Gaz]

i bet the cam timing is worth a look. im really suffering as mine is slightly out.

[simonbach]

7.9 seconds and what engine is that?
my last car did 0-60 in 4.95 seconds and 1/4 mile in 13.4 seconds and produced 320 bhp (all proven nissan 200sx) so my old gsi2000 feels like a slugen though its a proven 183 bhp

[Squig]

7.9 seconds and what engine is that?
my last car did 0-60 in 4.95 seconds and 1/4 mile in 13.4 seconds and produced 320 bhp (all proven nissan 200sx) so my old gsi2000 feels like a slugen though its a proven 183 bhp

2.5 v6... usually a 7 sec car to see 60, no idea of power but I suspect over 180bhp and possibly similar torque. I also suspect I know the cause of the problem... some time in the past I believe the inlet temp sensor has been bypassed so the car consistently fuels as if air temp is constant hence when the ambient temp drops below this the car under fuels and runs lean... so plan is to remove this and see what happens... Hopefully she will still run