That's a whole lot of good work. Imo the.spacers are telling us the intake ports may be on the large side relative to cam profile. Anything that improves cylinder filling that much at lower rpms is taking advantage of a port, cam, timing compromise imo.

I prefer the word alternatives. Thia is a very simple part, not a turbo kit. Would you buy a trd sound changer tube for 100?

Very nice appreciate your time. These blocks, a good header and tune could equate 35-40 whp gains solid. That is a pretty impressive stroke of goodness really. :clap:

this may be incredibly off topic, by why do some dynos such as this one read so low (130whp) while others read real high (180whp)? Nelsmar is right in saying we should be looking at percentages, but what is right here? does the car have 140whp or 180whp? Why would we believe one or the other? why isn't this a standard calculation?

anyways.. looks great. thanks neslmar. where is jamesm when you need him for supportive context

Nice review. I'm glad you didn't take their word for it, and tested it for yourself!

Great work! Picking up a set as I was already on the fence.

Really great info thanks!

Well lets be honest here, the numbers regardless if they seem low are this. The baseline dyno shows a number that it started with and then shows what it ended up with. Regardless what those numbers are they are hard data and the gains are either there or arent.dynojet dyno's tend to read higher the a mustang or a maha dyno. My car on a mustang dyno makes roughly 255-260, put it on a dynojet and it will read 280-290. Maha dyno is known to read low so he is right in saying look at the percentages.

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Not at all as I think.

Look carefully at "@ 7300-7400RPM".

Ahhh reading comprehension is hard lol.....

Thanks for the info.

Thanks for the heads up! That could have been confusing. Lol

FI air flow is different as you have a positive pressure differential vs the engine pulling. It'd also just a lot of work to get solid data when you have sketching such as a turbo that has so many variables. If I was supercharged still I would give it a whirl to see what it was like.

The car I was testing on us picking up a JDL UEL this week.

Someone else answered you but just to clarify 130 was the "peak hp" of the baseline. I was showing examples of gains at a specific rpm as the peak number shows little. Especially when you consider both the tuned with and without the spacers made nearly the same peak whp but the dyno with the Crawford spacers has more torque and more usable power.

I have a link I will try to post in the morning explaining dynos. This is why baselines and average baseline numbers are very important. This is why there has been friction with me and many vendors in the past when asking for detailed dyno info because peak numbers without an appropriate baseline is hard to gather solid info from. A fee vendors have made as much effort as me to show baselines and it is quite appreciated by those of us that are comfortable with them.

But as for which is right... The maha is extremely accurate and does a wind down to get a crank power reading but regardless that is still only so accurate. Simple answer is none are right. Look at the gains not the actual number tins worthless.

Nice work. Little less gain than I expected on a tuned car. But as you said, great on a stock car.

In for header results to see if anything changes substantially.

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Great review, and we've gotta talk about how you're getting so much power up top on an otherwise stock car!

Holy hell, you beat me to it. Great results and especially impressive 16% with tuning. I won't waste the effort and time doing a bolt ons with tune. I'll go straight into installing it with my vortech. Stay tuned.