Samson Goes to the Dyno...

Reply Subscribe

Thread Tools

Search this Thread

03-15-2006, 03:26 PM

#31

93turbo16

1.0 BAR

Join Date: Jan 2005

Posts: 425

Re: Samson Goes to the Dyno...

Quote:

Originally Posted by baldur

To be really sure if the tune is right you need to try it out in 5th. I tend to do most of the work in third, and ease up to fourth when third is absolutely perfect. It helps a lot to have a steep hill too, then you don't need to use the highest gear to get the desired full throttle time to make sure everything works right.
In the UK it's common to compete about top speed where they do 1.25 mile runs, those take around 30 seconds to finish and any car that has only been mapped on a chassis dyno _will_ blow it's engine when it attempts that.

That is all fine and dandy. BUt I am not about to have a customer do a 4-5th gear pull on the roads out here. That is 100% retarded. I definitley like street tuning after putting a car on the dyno, but you can compensate for going from the dyno to the street. THe A/F is almost a point leaner in my experiences from going from the dyno to the street. I always richen the tune up a substantial amount when it is done for safety, if I can't get the car on the street after a dyno.

03-15-2006, 03:38 PM

#32

samson

3.0 BAR

Thread Starter

Join Date: Mar 2005

Posts: 3,161

Re: Samson Goes to the Dyno...

I agree with JK and that was one HUGE plus to the dyno. His roads aren't very street tune freindly AT ALL. Besides I don't boost in 5th, and only run the 1/4 mile at the track. Worst I had it was prior to this tune and never more than this on a stock block was 4th gear 117mph. It's fine. I must be honest with you and say I've NEVER heard of any other way to really tune besides 3rd gear pulls. I heard of Mustangs doing 4th gear pulls, but that's it.

03-15-2006, 03:40 PM

#33

93turbo16

1.0 BAR

Join Date: Jan 2005

Posts: 425

Re: Samson Goes to the Dyno...

Quote:

Originally Posted by samson

4th gear pulls wouldn't off been out of the question on the dyno. But the charge pipe kinda limited that, and your pops would off lost some eye brow hair holding that pipe for much longer.