3.0 bar fuel pressure regulator in seta?

[dicej32]

I bought my '88 seta last year. I runs pretty strong but sometimes i get pinging in the 2500-3000 rpm range under load. I checked the ecu and somebody swapped it to a 173 from an i engine. This explains the pinging as the timing curve/fuel maps are different. Running 91 octane does help. I decided to get the an original ecu (154) and see how it worked. Long story short the motor runs perfectly, no pinging. The problem is the motor now feels way sluggish. The stock timing advance on the 154 sucks! I'm going to put the 173 back in but was thinking about switching the fuel pressure regulator from 2.5 bar to the 3.0 bar of the i. This will hopefully get me a little more fuel to the engine thus eliminating the pinging. My last spark plug change showed whitish plugs which would indicate lean mixture so I think this would help. Any thoughts or suggestions on this would be appreciated.

Thanks,

JR

[E30_fiend]

it honestly couldnt hurt. If it doesnt fix your problem, the most it will do is make the car run a bit rich. You could also try swapping in some 19lb injectors AND the 3.0 bar fpr, that would make for a nice performance gain on the SETA motor




Taylor

[supra89t]

My '88 seta is pinging around the same area 2500-3500 under load and seems really strong at lower RPM. Hrm...I guess I'll check the ECU. That or maybe the t-belt jumped time a tooth or two? Mine's due anyway.

[E30_fiend]

pinging as in detonation??