Is a PRP right for me?

[tusamni]

Here’s my setup:

• BW S256 .63a/r
• Tubular manifold
• 3” exhaust
• FIC 725cc injectors
• 255 walbro
• Return line
• Wideband
• DSP for logging
• Stock motor

Here’s my situation:
I’ve been running around on an old Rage-Tek DSP tune. WOT seems OK, the tune is way too rich, but I don’t like the results of pulling fuel with the handheld. The tune just doesn’t seem to respond well to handheld changes (read: smoothly). Part throttle driving is where I am most disappointed. I get lean stumbles on TIP in, if I let off the throttle and then get back on it, the A/F ratio shoots right up to 17+ for a second or two. I just can’t drive the car smoothly on part throttle. I don’t think it’s a hardware issue either since I have a tune from Brian which the drivability was perfect, unfortunately WOT is way off, so I couldn’t use it. I’ve emailed Rage logs and got one revised tune back, which didn’t seem to help much. I tried emailing them again and never heard anything again, but that was during their busy period with the DSP email tunes and they were overwhelmed.

I’m trying to decide if a PRP is a good investment for me. Jannetty is offering it to me for a good price. I’ve had piggy back systems before and I don’t like them. I would rather have a flash system. I’m sort of against email tunes, since I haven’t had the best of luck with them so far. I need drivability to be perfect and I’m not sold that it can happen through email tunes.

I mechanically understand cars, but I’m skeptical of my ability to get a PRP tune. Maybe I am too cautious. I’m willing to put in the man hours to get the tune right. I have 04blusrt_4 near me, and he has offered to help me out. My other option is a Jannetty Racing DSP tune for $500, however, my setup isn’t finished at this point and I don’t want to keep going back for re-tunes.

[duster360]

If the Price is good(I heard $720 at one time) I'd get the PRP. $ for $ its a better value than a shit load of custom tunes. You're quickly passing up its price with all the different custom flashes. Its not all that hard to tune if you have a decent tune to start with. Once you get the hang of it, you'll feel like a shmuck for ever paying someone else for tunes. 04blusrt_4 or anyone else here can help you out if you have any issues. Deffinatly keep the DSP for logging.

What was so wrong at WOT with Brian's tune?
Can you post the log?

[tusamni]

Quote: Originally Posted by duster360

If the Price is good(I heard $720 at one time) I'd get the PRP. Its a better value overall. You're quickly passing up its price with all the different custom flashes. Its not all that hard to tune if you have a decent tune to start with. 04blusrt_4 or anyone else here can help you out if you have any issues. Definatly keep the DSP for logging.

What was so wrong at WOT with Brian's tune?
Can you post the log?

The price is lower than $700, quite a bit actually.

I was using Brian's tune awhile ago, but I can reflash it and get a log to post. Basically, when you went WOT it had a bad lean stumble for a second or two, but it would eventually pull through and recorrect.

[04blusrt_4]

Honestly, the price of waiting for email tunes and not really maxxing out your tune ever (simply put its too dangerous via email) doesnt outweigh the downsides of the PRP. Things that take 15min to fix will take days over email tunes.

I would keep the DSP and get the PRP. Once you feel like your tune or setup is where you want it, you could just go by the scan gauge you have and be fine, sell the DSP. I have done my entire tunes with only the scan gauge.

I have plenty of good tunes I could send you get started, should be pretty close for your s256. Make sure you get stage 2 as the base code when you purchase it.

I have just completed my latest tune, VE and all tables rescaled to 6994 rpms Anyone with big turbo can really benefit from the rescaled settings, the computer doesnt hold back anymore. Took me 10 hours straight...LOL.

[tusamni]

Quote: Originally Posted by 04blusrt_4

Honestly, the price of waiting for email tunes and not really maxxing out your tune ever (simply put its too dangerous via email) doesnt outweigh the downsides of the PRP. Things that take 15min to fix will take days over email tunes.

I would keep the DSP and get the PRP. Once you feel like your tune or setup is where you want it, you could just go by the scan gauge you have and be fine, sell the DSP. I have done my entire tunes with only the scan gauge.

I have plenty of good tunes I could send you get started, should be pretty close for your s256. Make sure you get stage 2 as the base code when you purchase it.

I have just completed my latest tune, VE and all tables rescaled to 6994 rpms Anyone with big turbo can really benefit from the rescaled settings, the computer doesnt hold back anymore. Took me 10 hours straight...LOL.

I'm pretty sure at this point i'll be going PRP. I figured we could just start with one of your tunes, since we have pretty similar setups at this point. I'll make sure to get the S2 code

[SRT-What?]

Quote: Originally Posted by 04blusrt_4

I have just completed my latest tune, VE and all tables rescaled to 6994 rpms Anyone with big turbo can really benefit from the rescaled settings, the computer doesnt hold back anymore. Took me 10 hours straight...LOL.

how's the efficiency up there ?

[SpecJ]

I picked my PRP up for $500, so I can imagine that the prices must be seriously coming down on them. Thats the only reason I picked mine up instead of rebuilding my MS.

[04blusrt_4]

Quote: Originally Posted by SRT-What?

how's the efficiency up there ?

Not good, LOL. Still has a big dip at the higher end. The biggest thing tho if you look and go through your timing tables, a few of them pull big amounts of timing above 6k rpms. Good to go in there and zero those out. I couldnt figure out why my timing when I logged was going from 30* down to 22* by 6500 with no knock. Well that was the reason.