[EFI Tuning]

Rotofab becomes much more valuable as your modifications increase. This is with the tune untouched. These were done about 15 minutes apart. The stock cold air setup is restrictive once your air flow demands start increasing.

red - Rotofab
blue - stock




Tim

[F1FTY]

Same car as the previous example? Baseline is noticeably different.

Thank you for all of this information, it's helping me prioritize mods big time.

[EFI Tuning]

Originally Posted by F1FTY

Same car as the previous example? Baseline is noticeably different.

Thank you for all of this information, it's helping me prioritize mods big time.

No. This was on PRAY's car.

[PRAY]

Yes, this was on my car. After we tested the IM/TB on the un-tuned M6 car I wanted to ensure our testing was even Stephen. I also wanted to verify the gains I saw with the ported IM/TB/RF from the day I did all of my back to back testing on my car was legit. I couldn't see how it couldn't be since both procedures were done the same. Strap car down, three pulls with each combo, throw out the highs and lows. So I put my car back on for a base line with the RF and then swapped the stock CAI back on and then did the RF again. Like Tim said, it was all within probably 15 minutes at best. The largest gains we saw was 14/10rw. My car put up within 5rw of what it did at the end of my last testing session. If I would have made another pass it probably would have been within 2-3rw of the previous tests. These cars seem to get better with a couple pulls on each combo. So with just the tune, IM/TB, RF I went from 393/413rw to 437/455rw average. Peak power was 440/460rw. I have backed that up twice now.

At the end of the day, the RF with the dry filter flat out works on my car. I have tested in on two different occasions now back to back.

[PRAY]

I don't think you are going to get more bang for the buck than our Tune, ported IM/TB, and RF with the dry filter. Then E85 of course, or vice versa.

[laynlo15]

I'll have a Rotofab on my Heartbeat. I expect some pretty good gains

[EFI Tuning]

Originally Posted by laynlo15

I'll have a Rotofab on my Heartbeat. I expect some pretty good gains

I have no doubt it will be a significant benefit. GM optimized the stock configuration unlike any previous generation. But it is optimized for a particular operating range. Once you deviate it's time to reoptimize.

[BadBowtieProductions]

Originally Posted by PRAY

So I put my car back on for a base line with the RF and then swapped the stock CAI back on and then did the RF again. Like Tim said, it was all within probably 15 minutes at best. The largest gains we saw was 14/10rw. My car put up within 5rw of what it did at the end of my last testing session.

Slimmed your post and bolded a couple keys points for future readers. Love to see good testing procedure! Thanks for the info!

[Burly]

Originally Posted by PRAY

I don't think you are going to get more bang for the buck than our Tune, ported IM/TB, and RF with the dry filter. Then E85 of course, or vice versa.

Bottom line from stock, to get an additional ~44hp/~42tq you need Tune $400(HPTuner STD +$499) Ported IM/TB $575, and RF $469.95 for a total of $ 1943.95.

So we need to see Pray's numbers with E85.

[Burly]

And does EFI's remote tune require a wideband sensor?

[EFI Tuning]

If you have a stock or Rotofab CAI then a wideband is not a necessity as the MAF output is a known entity. To tune for another brand I would either need a kit temporarily or a car with a WB.

Tim

Originally Posted by Burly

And does EFI's remote tune require a wideband sensor?

[PRAY]

I will be testing the E85 on the dyno soon. I am also going to the track on Saturday to test at a rental. As soon as it stops raining here I am putting the WB in it and hitting the streets to dial it in. Once I have all of that done I am going to hit the dyno for final numbers to see what the E85 is worth. I will be honest though, I am about $800 into dyno time and track testing out of my own pocket at this point. Getting data on this stuff has not been cheap. I have been on multiple dyno's verifying my findings and to multiple track days. IM/TB kits are going out now so hopefully people will start hitting the dyno and track to back up my findings. Some guys have already hit the track with great results but unfortunately there were no base lines. Their times and MPH's speak for themselves though.

I honestly think, and this is just my opinion, the only reason we didn't see larger gains on the test car is that it had a cat back that apparently leaned the AFR out more than I have seen on any other stock car. The IM/TB obviously made that worse. If this car was dead stock or had the normal fat AFR curve then leaning it out a bit would have shown good gains. These cars don't like being lean. Or on the leaner side of 13.0. Especially down low. Every time I get a car above 12.5-12.7 I lose power. Down low it seems to like being a little fatter than that. I don't like to speculate so we published what we saw and had hard numbers on.

I still say that the full compliment of E85, IM/TB, RF, Tune will give you a mid to low 11 sec daily that has perfect manners. No compromises. I am personally shooting for 10.99 but I am hard headed. LOL.

[Burly]

I appreciate what you and Tim are doing and have learned a lot following along. Can't wait to see what E85 adds to your numbers.

[JFM-jr]

Originally Posted by PRAY

I will be testing the E85 on the dyno soon. I am also going to the track on Saturday to test at a rental. As soon as it stops raining here I am putting the WB in it and hitting the streets to dial it in. Once I have all of that done I am going to hit the dyno for final numbers to see what the E85 is worth. I will be honest though, I am about $800 into dyno time and track testing out of my own pocket at this point. Getting data on this stuff has not been cheap. I have been on multiple dyno's verifying my findings and to multiple track days. IM/TB kits are going out now so hopefully people will start hitting the dyno and track to back up my findings. Some guys have already hit the track with great results but unfortunately there were no base lines. Their times and MPH's speak for themselves though.

I honestly think, and this is just my opinion, the only reason we didn't see larger gains on the test car is that it had a cat back that apparently leaned the AFR out more than I have seen on any other stock car. The IM/TB obviously made that worse. If this car was dead stock or had the normal fat AFR curve then leaning it out a bit would have shown good gains. These cars don't like being lean. Or on the leaner side of 13.0. Especially down low. Every time I get a car above 12.5-12.7 I lose power. Down low it seems to like being a little fatter than that. I don't like to speculate so we published what we saw and had hard numbers on.

I still say that the full compliment of E85, IM/TB, RF, Tune will give you a mid to low 11 sec daily that has perfect manners. No compromises. I am personally shooting for 10.99 but I am hard headed. LOL.

I am looking forward to your track times a 10.99 is within grasp and sub 11.20's is on lock with E85.