I've been looking at turbos over the past few months, and I was wondering if anyone had any experience or knowledge with the Precision 4828?

I'm down to a GT2560 and a Precision 4828 as my choices. I know, I know, EFR is God - but my setup renders using an EFR impossible without getting an entirely new setup.

 

Bueller? Bueller?

 

I had to search around for it on their website.
http://www.precisionturbo.net/turboc...ger---4828-/73

Spec wise, looks close to the GT2860RS, but with dual ceramic ball bearings, a billet compressor wheel and $42 more retail.

Seems full of win to me.

Or for less than half $, you can get their entry level/standard wheel/standard bearing/oil cooled/EWG.

 

no compressor map no care!

 

It has a map "Comparable" to the GTX2860. Precision refuses to release compressor maps, always has IIRC - but in dynos, it outperforms the 2860RS in both spool and output, and is efficient to HigherBoostThanI'dEverRun.

I can pick up a 4828 for around the same cost as a 2860, which for obvious reasons makes the 2860 not an option.

So it's basically 2560 vs 4828, as a 2860 would be a silly option due to the 4828.

 

Do you want more power potential and more cost? Or lower cost and lower power potential, and probably better spool? Seems like only you can answer your question here.

 

Although, I do believe his question was more "who has experience with Precision turbos" rather than "which turbo should I buy". Looking for experiences dealing with the company, quality of product, etc?

 

Like Tim I did some searching and found very little info. I'd like to see some dyno info, even if it's not on our cars. After doing some reading i'm curious how it compares to the efr. Seems interesting enough. Wish I could see a compressor map too. ********.

 

Turbo's got the right of it, I don't want to end up in warranty hell. Previous experience with the specific 4828 on the BP platform would be absolutely **** too.

(@Tim too) Saw some dynos from a local tuner, the spool is equal to better than the 2560 on similar platforms. Sadly, no BP engines though.

My main worry is company and warranty-related, and/or BP-specific experience.

I hate being a guinea pig for this sort of thing, been trying to dig up anything I can with respect to precision or the 4828.

 

Ahh ok sorry for going off half cocked.

Can you post a link to where you saw it performing similarly to the 2560? Or did you see them in person locally?

My limited experience with Precision has been great (only bought one turbo & wastegate from them so far). Lots of guys where I work have precision turbos, dealt with them directly, and all of them also say they are great. I could not find a single bad thing someone said about them, at least in the past few years. There was a while between when they got their stuff from garrett and when they made their own parts where they were sourcing their stuff from turbonectics or other shady chinese sources and their quality/reputation suffered, but that's been a few years. No problems since, according to the internets. I would like to think of them like Jesel...smaller privately owned USA manufacturing company where the owner works every day and if you have a problem, call 'em up and they would be happy to make it right. Call up with a 'tude though and it may not be good.

Casting quality is above garrett on my turbo. Machine work on the comp. wheel is impressive.

 

Local tuner, local dyno, soz Tim.

You've pretty much 99% sold me on the 4828 Tim. Thanks!

 

In for results

 

So, on a T25 turbine, any recommendations as to if I should go with 0.64 or 0.86 A/R?

Thanks guys! I'm about to pull the trigger on one!

 

Depends on what your goals are. I'm going to be picking up the same turbo in a couple of days, opting for the T25 .64 housing and going external gate but then again I really don't mind losing a bit in top end if I gain more response.

 

Was leaning towards the .64 myself, that decides it. Thanks Hobbs!

 

PM me what you're getting as far as pricing goes, may be able to get it cheaper.

 

Yhpm

 

What are you guys getting for pricing?

Can you find out what A/R the local tuner was running when he had it spooling as well as a 2560?

I would run the .64 if you were running a stock engine, and consider the .86 if you had a built engine/6 speed/etc.

 

In for who you are getting your turbo through. Also looking to get a precision turbo, talked to Aaron from precision and I can buy through them, but he said I can probably get cheaper through someone who is a dealer.

 

I contacted nate@maperformance.com directly, and asked him for his best quote on a 4828. $1045 from him at the time of the quote.

It may have changed since I ordered, YMMV, etc. etc.