[Randy Johnson]

So intakes and exhaust don’t provide much if any performance gain. No flash tune if you don’t ship you ecu off to a sketchy 3rd world country. Downpipes give cels (except AA). What are we left with? JB4? What is that gonna get you? 30hp? Am I missing anything?

[rostrata]

Interesting opening on your topic. So, you want to mod but unwilling to pay to play. I don’t get it. FEMTO unlock is your only option ‘21 and up. And hundreds, if not thousands of people have done it. Expensive? Yep! A few days to a week without your car? Yep! Worth it if you want to play for real? Absolutely. The B58 has quite literally made a name for itself in terms of reliability and aftermarket tuning. There are tons of things you can do. But tuning is one of the first steps, along with a TCU tune. After that, you can build and build and build. Carrillo makes pistons and rods. Another company makes titanium valve and retainers.

So, again. What’s the real question? Power can’t be had for free.

[RichRawks]

Finland's a 3rd world country ???? Lol

[peelerec]

Originally Posted by Randy Johnson

So intakes and exhaust don’t provide much if any performance gain. No flash tune if you don’t ship you ecu off to a sketchy 3rd world country. Downpipes give cels (except AA). What are we left with? JB4? What is that gonna get you? 30hp? Am I missing anything?

You’re missing modifying suspension and not power. IMO, you should modify suspension first

[RichRawks]

Originally Posted by peelerec

You’re missing modifying suspension and not power. IMO, you should modify suspension first

What's the typical route for this?

When I was big in to drag racing, suspension/tires were always first stop and netted the best results for quarter mile for price.

[peelerec]

Originally Posted by RichRawks

What's the typical route for this?

When I was big in to drag racing, suspension/tires were always first stop and netted the best results for quarter mile for price.

Ohlins R/T coilovers, camber plates and SPL catalog.

[pdxtiger]

Pistons, rods, and headwork is waaaaaaay down the list. FEMTO, a tune, ethanol and a downpipe. Maybe PI. Then you're already at the point of building the trans which to me is the big hurdle, gotta decide to make that investment and go big time or just stop and enjoy it. You also need wider wheels and tires pretty quick unless you don't care about leaving from a dig. Once the trans is built to whatever stage you wanna pay Pure for, you're looking at a different turbo, then you'll start to venture into opening up the longblock and spending the serious money on pistons, rods, cams, machining etc.

You can run a Pure turbo setup without building the trans but you'll have to leave a good amount of torque on the table and avoid launches and high-gear pulls IMO.

[Randy Johnson]

I’m just lookin for a decent boost in power. I was full bolt on with bm3 on my 435. Looking for a similar path but I realize this is a different platform. The real question is what will a jb4 provide in power on 93 octane? What if I add a catted dp? I’m not tracking so I don’t feel the need for suspension mods. I just want to wake up the car a little. Thanks for all the friendly replies.

[rostrata]

Originally Posted by pdxtiger

Pistons, rods, and headwork is waaaaaaay down the list. FEMTO, a tune, ethanol and a downpipe. Maybe PI. Then you're already at the point of building the trans which to me is the big hurdle, gotta decide to make that investment and go big time or just stop and enjoy it. You also need wider wheels and tires pretty quick unless you don't care about leaving from a dig. Once the trans is built to whatever stage you wanna pay Pure for, you're looking at a different turbo, then you'll start to venture into opening up the longblock and spending the serious money on pistons, rods, cams, machining etc.

You can run a Pure turbo setup without building the trans but you'll have to leave a good amount of torque on the table and avoid launches and high-gear pulls IMO.

Oh I hope you didn't take my post wrong. I agree with absolutely EVERYTHING you stated here and is actually the very path I'm on at the moment. I was jumping to the end to make more of a point than anything else. Well stated!

To the op, this would be the correct path to choose IF you decide to ever want to burn that much cash on a non-M car.

[rostrata]

Originally Posted by Randy Johnson

I’m just lookin for a decent boost in power. I was full bolt on with bm3 on my 435. Looking for a similar path but I realize this is a different platform. The real question is what will a jb4 provide in power on 93 octane? What if I add a catted dp? I’m not tracking so I don’t feel the need for suspension mods. I just want to wake up the car a little. Thanks for all the friendly replies.

JB4... meh. There's better. I wouldn't go that route. Just look at the classifieds and you'll see how many have been bought and put up for sale. If they worked well, you wouldn't see them so often.

So, this is what I'd do if I were you... You stated in your very last post you just want to wake the car up a little. Okay, fair enough! That's the info I was looking for.

Several companies make JB4-like devices that I believe are more reliable and safer. No FEMTO unlock required. Dahler, Carbahn, etc. Good way to go to "wake the car up a little."

Second, do get an intake of some sort. While the stock intake has proven to be very good, aftermarket options offer a more lively sound and will help with throttle response. Third, get a downpipe. You don't need super high flow, but I would get a quality one that won't throw a CEL. Since you won't be tuned, officially, it won't shadow code. Those three things right there should net you around 50-65 hp more at the crank, if not a tad more depending on how the tuner dongle responds to the downpipe.

AA or equivalent dp - $1,200 - $2,000
Dahler tuner - https://www.daehler-tuning.com/produ...n-g21-touring/
$1,700
Intake - $400 - ish.

So for about $3,500, you can completely revert to stock with little effort and have some decent gains that should make you pretty happy with it. You'll can plan on getting about 60-65% of the value of those parts back too if you decide to go a different way. Not a bad "investment."

[Randy Johnson]

The tune is way overpriced for me. Not willing to spend that much. Will check the classifieds for used catted downpipes and intakes to start. Thanks for the response.

[rostrata]

Originally Posted by Randy Johnson

The tune is way overpriced for me. Not willing to spend that much. Will check the classifieds for used catted downpipes and intakes to start. Thanks for the response.

There are still several other companies that make their own version of a JB4… but better. You can get one for less than that. Dahler doesn’t screw around so it’s a pretty solid bet. Only reason I threw that one up there.

Good luck!

[Randy Johnson]

I've only seen JB4 piggy back tunes mentioned in this forum. Can you give me some other names of piggy back tunes?

[Heck1]

Originally Posted by Randy Johnson

I've only seen JB4 piggy back tunes mentioned in this forum. Can you give me some other names of piggy back tunes?

Jb4 is the best piggy back on the market. A real flash tune is still the best way to go with these cars. Femto unlock is not crazy expensive anymore either. They charge 600 euros or ~$650usd + shipping. Turn around time is outstanding with 3-10 (shipping dependent) day turn around times.

[DieselDuck]

Haha Finland 3d world country, wtf ?

I agree it feels a bit sketchy to send over your DME to another continent but I've honestly never heard a single bad experience from anyone that sent out his ecu to femto.

A bit annoying ? Yeah, but still worth it!

[Randy Johnson]

Originally Posted by Heck1

Jb4 is the best piggy back on the market. A real flash tune is still the best way to go with these cars. Femto unlock is not crazy expensive anymore either. They charge 600 euros or ~$650usd + shipping. Turn around time is outstanding with 3-10 (shipping dependent) day turn around times.

I would love a flash tune but unfortunately I'm not in a position to have my car out of service for several weeks. May just try a JB4.

[mike@x-ph.com]

intakes add 10-15 whp per all the posted dynos

the jb4 with only an intake and E30 made 464 whp. that's a lot of gains

Originally Posted by RichRawks

Finland's a 3rd world country ???? Lol

Originally Posted by DieselDuck

Haha Finland 3d world country, wtf ?

Yes, Finland is a sketchy 3rd world country. In fact, Anywhere outside of the US is a third-world country

[DieselDuck]

Originally Posted by mike@x-ph.com

Yes, Finland is a sketchy 3rd world country. In fact, Anywhere outside of the US is a third-world country

Nonetheless seems like you're still enjoying driving 3rd world cars!

[mike@x-ph.com]

Originally Posted by DieselDuck

Nonetheless seems like you're still enjoying driving 3rd world cars!

[Info@mad-us.com]

South florida is closer to a 3rd world country than finland is.

[Randy Johnson]

South Florida is North Cuba!!! Or Mexico. Oh speaking of Mexico, my BMW was made there!!!

[Randy Johnson]

Originally Posted by mike@x-ph.com

intakes add 10-15 whp per all the posted dynos

the jb4 with only an intake and E30 made 464 whp. that's a lot of gains




Yes, Finland is a sketchy 3rd world country. In fact, Anywhere outside of the US is a third-world country

True dat!!!!

Listen Linda I’m just saying I am not removing my ecu and sending it anywhere. Bootmod3 needs to crack this computer!