your fastest speed [ISUZU vehicles]

**GTi** · May 21st, 2012 01:57 PM

Originally Posted by rna800

I have the 4JJ1. It's an 08 model with DDI Iteq engine. It has always been that way. After the 1,000 km break in, I tried it right away and at 175 kph, it was almost done. It just didn't want to go faster anymore. Perhaps it will but the speedometer was literally crawling already and at times it will slow down or reduce speed which feels like it has its own speed limiter.

I don't know if I did the proper break in but I did bursts before even reaching 140 then back to 100 then burst to 120 and so on but I didn't go beyond 150. Something like that. I just didn't let it go beyond 3k rpm for long period of time. Most of the time I let it play in the 80 to 100 kph in its first 1,000 kms and that was also the reason why I was able to pull off that more than 1,000 kms in one full tank but I couldn't do it anymore thereafter.

That's odd, I suppose not all engines were created equal then. Is it crawling like this one? If so, maybe just a bit more patience is required. I suppose it reached top gear at the 175km/h mark and it would crawl all the way to its top speed if you keep the accelerator floored. Maybe you'd like to try cleaning and/or replacing the air and oil filters and see if the performance improves.

**rna800** · May 21st, 2012 05:57 PM

Originally Posted by GTi

That's odd, I suppose not all engines were created equal then. Is it crawling like this one? If so, maybe just a bit more patience is required. I suppose it reached top gear at the 175km/h mark and it would crawl all the way to its top speed if you keep the accelerator floored. Maybe you'd like to try cleaning and/or replacing the air and oil filters and see if the performance improves.

Similar to that but slower. Could it be possible that the Dmax on the video is the VGS version? I hope the video captured the tach clearly but based on what I saw, at 48 seconds at more than 190 kph, the tach reading is almost red line already.

Perhaps I just didn't push it more or maybe due to the road terrain. I only try those speeds in SCTEX since most of the time I only drive around 100 kph to 120 on National roads and around 60 to 80 in city limits. In NLEX, I am a bit more cautious. Just burst speed of 120 to 140. Next time when I go up north, I will try again.